19-4323; Rev 5; 6/95 MAXALAV +5V-Powered, Multi-Channel RS-232 General Description The MAX220-MAX249 family of line drivers/receivers is intended for all EIA/TIA-232E and V.28/V.24 communi- cations interfaces, and in particular, for those applica- tions where +12V is not available. These parts are particulary useful in battery-powered systems since their low-power shutdown mode reduces power dissipation to less than 5uW. The MAX225, MAX233, MAX235, and MAX245-MAX247 use no exter- nal components and are recommended for applications where printed circuit board space is critical. Drivers/Receivers Features Superior to Bipolar @ Operate from Single +5V Power Supply (+5V and +12V-MAX231 and MAX239) # Low-Power Receive Mode in Shutdown (MAX223/MAX242) 4 Meet All EIA/TIA-232E and V.28 Specifications Multiple Drivers and Receivers 3-State Driver and Receiver Outputs # Open-Line Detection (MAX243) Applications Ordering {Information Portable Computers PART TEMP. RANGE PIN-PACKAGE Low-Power Modems MAX220CPE OC to +70C 16 Plastic DIP : MAX220CSE OC to +70C 16 Narrow SO Interface Translation - B p d RS-232 Syst MAX220CWE OC to +70C 16 Wide SO attery-Powered RS-232 Systems MAX220C/D OC to+70C _Dice* Multi-Drop RS-232 Networks MAX220EPE -40C to +85C 16 Plastic DIP MAX220ESE -40C to +85C 16 Narrow SO MAX220EWE -40C ta +85C 16 Wide SO MAX220EJE -40C to +85C 16 CERDIP MAX220MJE -55C to +125C 16 CERDIP Ordering information continued at end of data sheet. *Contact factory for dice specifications, Selection Table Power No. of Nominal SHDN Rx Part Supply RS-232 No. of Cap. Value & Three- Activein Data Rate Number (Vv) Orivers/Rx Ext.Caps (uF) State SHDN (kbps) Features MAX220 +5 2f2 4 47/0 No 120 Ultra low-power, industry-standard pinout MAX222 +5 ale 4 0.1 Yes 200 +5V IBM PC serial port with receivers active in shutdown MAX223 (MAX213) +5 4/5 4 1.0 (0.1) Yes Ww 120 MAxX241 + receivars active in shutdown MAX225 +5 5/5 Q - Yes v 120 Available in SO MAX230 (MAX200) +5 5/0 4 1.0 (0.1) Yes 120 5 drivers with shutdown MAX231 (MAX201} +5 and 2/2 2 1.0 (0.1) No 120 Standard +5/+12V or battery supplies: same +75 to +13.2 functions as MAX232 MAX232 (MAX202) +5 2/2 4 1.0 (0.1) No 120 (64) Industry standard MAX2324 +5 ale 4 a1 No 200 Higher slew rate, small caps MAX233 (MAX203) +5 2/2 0 = No 120 No external caps MAX233A +5 2/2 9 - No 200 No external caps, high siew rate MAX234 (MAX204) +5 4/0 4 1.0 (0.1) No 120 Replaces 1488 MAX235 (MAX205) +5 5/5 0 - Yes 120 No external caps MAX236 (MAX206) +5 4/3 4 1.0 (0.1) Yes 120 Shutdown, three-state MAX237 (MAX207) +5 5/3 4 1.0(0.1) No 120 Complements IBM PC serial port MAX238 (MAX208) +5 4/4 4 1.0 (0.1) No 120 Replaces 1488 and 1489 MAX239 (MAX209) +5 and 3/5 2 1.0 (0.1) No 120 Standard +5/+ 12V or battery supplies; single +7.5 to +13.2 package solution for IBM PC serial port MAX240 +5 5/5 4 10 Yes 120 DIP or flalpack package MAX241 (MAX211) +5 4/5 4 4.0 (0.1) Yes 120 Complete IBM PC serial port MAK242 +5 Bye 4 0.1 Yes 200 Separate shutdown and enable MAX243 +5 2/2 4 0.1 No 200 Open-line detection simplifies cabling MAX244 +5 8/10 4 1.0 No 120 High slew rate MAX245, 45 8/10 oO - Yes v 120 High slew rate, int. caps, lwo shutdown modes MAX246 +5 8/10 0 - Yes 120 High siew rate, int. caps, three shutdown modes MAX247 +5 afo 0 - Yes a 120 High stew rate, int. caps, nine operating mades MAX248 +5 8/8 4 1.0 Yes v 120 High slew rate, selective half-chip enables MAX249 +5 6/10 4 1.0 Yes v 420 Available in quad flatpack package MA AXIAA Maxim Integrated Products 1 Call toll free 1-800-998-8800 for free samples or literature. {MENON TN IAN gn *MAXMSO2 5x 6VCXVIN-OCCXVINMAX220-MAX249 +5V-Powered, Multi-Channel RS-232 Drivers/Receivers ABSOLUTE MAXIMUM RATINGSMAX220/222/232A/233A/242/243 Supply Voltage (Voc) ..cccccccececsceseeenenstesenenines -0.3V to +6V input Voltages TiN EOE -0.3V to (Veco - 0.3V) tt 30V +15V wet 1BV OUT 3V to (Voc + 0.3V) Driver/Receiver Output Short Circuited to GND......... Continuous Continuous Power Dissipation (Ta = +70C) 16-Pin Plastic DIP (derate 10.53mW/C above +70C) ....842mW 18-Pin Piastic DIP (derate 11.11mW/C above +70C) ....889mW 20-Pin Plastic DIP (derate 8.00mW/C above +70C)...... 440mW 16-Pin Narrow SO (derate 8.70mMW/C above +70C) ...696mMW 16-Pin Wide SO (derate 9.52mW/C above +70C)....... 762mW 18-Pin Wide SO (derate 9.52mW/C above +70C)....... 762mW 20-Pin Wide SO (derate 10.00mW/C above +70C).....8300mW 20-Pin SSOP (derate 8.00mW/C above +70C)............ 640mW 16-Pin CERDIP (derate 10.00mW/C above +70C)......800mW 16-Pin CERDIP (derate 10.53mW/C above +70C)......842mW Operating Temperature Ranges: MAX2_ _AC_ _, MAX2_ Coote OC to +70C MAX2_ _AE__, MAX2__E__ 40C to +85C MAX2__AM__, MAX2_ _M_ -55C to +125C Storage Temperature Range .........ceeeeeeee -65C to +160C Lead Temperature (soldering, 10SC) .......... cece +300C Note 1: Input voltage measured with Toy in high-impedance state, SHDN or Vcc = OV. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICSMAX220/222/232A/233A/242/243 (Veco = +5V 10%, C1-C4 = 0.1pF, Ta = Tryin to Tax, unless otherwise noted.) PARAMETER | CONDITIONS | MIN TYP = MAX [UNITS RS-232 TRANSMITTERS Output Voltage Swing All transmitter outputs loaded with 3kQ to GND +5 +8 Vv Input Logic Threshold Low 1.4 0.8 Vv Input Logic Threshold High 2 1.4 Vv Logic Pull-Up/input Current Normal operation 0 pA SHDN = OV, MAX222/242, shutdown +0.01 +1 Vcc = 5.5V, SHDN = OV, VouT = +15V, MAX222/242 +0.01 +10 Output Leakage Current Voc = SHDN = OV, Vour == 15V 40.01 10 WA Data Rate Except MAX220, normal operation 200 116 kbits/ MAX220 22 20 sec Transmitter Output Resistance Voc = V+ V- = OV, VouT = +2V 300 10M Q Output Short-Circuit Current VouT = OV +7 +22 mA RS-232 RECEIVERS RS-232 Input Voltage Operating Range +30 Vv Except MAX243 R2in 0.8 1.3 RS-232 Input Threshold Low Vec = 5V Vv MAX243 R2in (Note 2) -3 RS-232 Input Threshold High Vee = 5V Except MAX243 R2IN 18 24 Vv MAX243 R2in (Note 2) -0.5 -0.1 RS-232 Input Hysteresis Except MAX243 Vcc = 5V, no hyst. in shdn. 0.2 0.5 1 Vv MAX243 RS-232 Input Resistance 3 5 7 kQ TTL/CMOS Output Voltage Low louT = 3.2mA 0.2 0.4 Vv TTL/CMOS Output Voltage High lout = -1.0mA 3.5 Vec-0.2 Vv TTLICMOS Output Short-Circuit Current | SOurcing Vout = GND 2 10 mA Shrinking Vout = Vcc 10 30 TTL/CMOS Output Leakage Current SHDN = Vcc or EN = Voc, OV < VouT < Vcc +0.05 +10 HA 2 MAAXIAA ooo+5V-Powered, Multi-Channel RS-232 Drivers/Receivers ELECTRICAL CHARACTERISTICSMAX220/222/232A/233A/242/243 (continued) (Veco = +5V 10%, C1-C4 = 0.1pF, Ta = Tryin to Tax, unless otherwise noted.) PARAMETER CONDITIONS MIN TYP MAX UNITS EN Input Threshold Low MAX242 1.4 0.8 V EN Input Threshold High MAX242 2.0 1.4 V POWER SUPPLY Operating Supply Voltage 45 6.5 Vv No toad MAX220 0.5 2 jo loa Vcc Supply Current (SHDN = Vcc), MAX222/232A/233A/242/243 4 10 mA Figures 5, 6, 9, 19 3kQ load MAX220 12 both outputs MAX222/232A/233A/242/243 15 Ta = +25C 0.1 10 Ta = 0 to +70C 2 50 Shutdown Supply Current MAX222/242 icown Supply warren ! Ta = -40 to +85C 2 50 pA Ta = -55 to +125C 35 100 SHDN Input Leakage Current MAX222/242 +1 pA SHDN Threshold Low MAX222/242 1.4 08 Vv SHDN Threshold High MAX222/242 2.0 1.4 Vv AC CHARACTERISTICS Re aka to rea | MAX222/232N/233A/242/243 | 6 12 30 Transition Slew Rate Voc = BV, Ta = +25C, Vis measured from +3V to -3V or -3V to +3V MAX220 18 3 30 MAX222/232A/233A/242/243 1.3 3.5 Transmitter Propagation Delay tPHLT MAX220 4 10 TLL to RS-232 (Normal Operation), US Figure 1 telat MAX222/232A/233A/242/243 15 3.5 MAX220 5 10 MAX222/232A/233A/242/243 0.5 1 Receiver Propagation Delay tPHLR MAX220 06 3 RS-232 to TLL (Normal Operation), - Ls Figure 2 t MAX222/232A/233A/242/243 0.6 1 PLHB MAX220 08 3 Receiver Propagation Delay tPHLS MAX242 0.5 10 5 RS-232 to TLL (Shutdown), Figure 2 tPLHS MAX242 25 10 My Receiver-Output Enable Time, Figure 3 | ter MAX242 125 500 ns Receiver-Output Disable Time, Figure 3 | tor MAX242 160 500 ns Transmitter-Output Enable Time t MAX222/242, 0.1pF caps 250 5 (SHDN goes High), Figure 4 ey (includes charge-pump start-up) H Transmitter-Output Disable Time (SHDN goes Low), Figure 4 tT MAX222/242, 0.1pF caps 600 ns Transmitter + to - Propagation MAX222/232A/233A/242/243 300 : . tPHLT - (PLHT ns Delay Difference (Normal Operation) MAX220 2000 Receiver + to - Propagation t ' MAX222/232A/233A/242/243 100 ns Delay Difference (Normal Operation) PHLA -1PLHR MAX220 225 Note 2: MAX243 R2ouT is guaranteed to be low when R2n is 2 OV or is floating. MAXLAA 3 6PCXVIN-OCCXVINMAX220-MAX249 +5V-Powered, Multi-Channel RS-232 Drivers/Receivers QUTPUT VOLTAGE (V) Typical Operating Characteristics MAX220/MAX222/MAX232A/MAX233A/MAX242/MAX243 OUTPUT VOLTAGE ys. LOAD CURRENT ine EITHER V+ OR V- LOADED l { | | O4pF | Vec +5V NO LOAD ON [- _ TRANSMITTER OUTPUTS (EXCEPT MAX220, MAX233A) | V- LOADED, NO LOAD ON V+ O.1pF 1pF a] Ls ato ae V+ LOADED, NO LOAD ON V- 0 5 10 15 20 25 LOAD CURRENT (mA) OUTPUT CURRENT (mA) AVAILABLE OUTPUT CURRENT vs. DATA RATE OUTPUT LOAD CURRENT FLOWS FROM V+ TO V- ALL 1 HF Voc = +5.25V + ALL CAPS O.AME Vec = +4.75V 10 2 30 40 50 60 DATA RATE (kbits/sec) V+, V- VOLTAGE (V) +10V +5V +5V ov ov -10V ON-TIME EXITING SHUTDOWN MAX222/MAX242 V+ 1uF CAPS t I 0.1yF CAPS {uF CAPS O.1yF CAPS 500us/div SAAXLM+5V-Powered, Multi-Channel RS-232 Drivers/Receivers ABSOLUTE MAXIMUM RATINGSMAX223/MAX230-MAX241 bececeedeeeteneeeneneseeeentescensestaenevescenentgisteussseaeeesaneeeeae -0.3V to +6V we (Veg + 0.3V) to +14V pecseeescetieeeustetereavuccesatisereatigeetatiensiasistsnteseiateessensas +0,3V to -14V TN cctecccee tree te eeteeteuetetescerseteneeeteeneventensestines -0.3V to (Veg + 0.3V) RQ eececceeescceteesceeeecccteccsestessceaceasssstavsescietetisassenenecieseaenenseas +30V Output Voltages Tour-- . (V+ + 0.3V) to (V- - 0.3V) Rout Pee eee tent e saat ee rant eate eben -0.3V to (Veco + 0.3V) Short-Circuit Duration, Toye... ccc eee Continuous Continuous Power Dissipation (Ta = +70C) 14-Pin Plastic DIP (derate 10. 00mW/C above +70C) ....800mW 16-Pin Plastic DIP (derate 10.53mW/C above +70C) ....842mW 20-Pin Plastic DIP (derate 11.11mW/C above +70C) ....889mW 24-Pin Narrow Plastic DIP (derate 13.33mW/C above +70C).....1067mMW 24-Pin Plastic DIP (derate 9.09mW/C above +70C) ...... 500mW 16-Pin Wide SO (derate 9.52mW/C above +70C) ......... 762mW 20-Pin Wide SO (derate 10.00mW/C above +70C)....... s00mW 24-Pin Wide SO (derate 11.76mW/C above +70C) ....... 941mWw 28-Pin Wide SO (derate 12.50mW/C above +70C) ..... 1000mW 44-Pin Plastic FP (derate 11.14mW/C abave +70C)...... 889mW 14-Pin CERDIP (derate 9.09mW/C above +70C) .......... 16-Pin CERDIP (derate 10.00mW/C above +70C)........ 20-Pin CERDIP (derate 11.11mW/C above +70C) ........ 889mWw 24-Pin Narrow CERDIP (derate 12.50mW/C above +70C)......1;000mW 24-Pin Sidebraze (derate 20.0mW/C above +70C) .....1600mMW 28-Pin SSOP (derate 9.52mW/C above +70C)...........2. 762mW Operating Temperature Ranges MAX2 _ Co eccentric tener tte r neers 0C to +70C MAX2 _ Eo cece eee niente rete n ecient -40C to +85C MAX2 _ M_ _oe eee 55C to +125C Storage Temperature Range .........0.. 65C to +160C Lead Temperature (soldering, 10 sec)........... cieeeetetiees +300C Stresses beyond those fisted under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICSMAX223/MAX230-MAX241 (MAX223/230/232/234/236/237/238/240/241 Veco = +5V 10%, MAX233/MAX235 Vog = 5V 5%, C1-C4 = 1.0nF, MAX231/MAX239 Veg = 5V +10%, V+ = 7.5V to 13.2V, Ta = Tryin to Tyax. unless otherwise noted.) MAXIM PARAMETER CONDITIONS MIN TYP MAX UNITS Output Voltage Swing All transmitter outputs loaded with 30kQ to ground +5.0 7.3 Vv MAX232/233 5 10 Voc Power-Supply Current r eat og. | MAK229/282/230/234-238/240/241 7 15 mA MAX23 1/239 4 1 MAX231 18 5 V+ Power-Supply Current mA MAX239 15 MAX223 15 50 Shutdown Supply Current Ta = +25C pA MAX230/235/236/240/24 1 1 10 Input Lagic Threshold Low TIN; EN, SHDN (MAX223), EN, SHDN (MAX230/235-241) 0.8 Vv TIN 2.0 Input Logic Threshold High EN, SHDN (MAX223), V EN, SHDN (MAX230/235/236/240/24 1) 24 Logic Pull-Up Current Tin = OV 15 200 pA Receiver Input Voltage -30 430 Vv Operating Range 5 6PCXVIN-OCCXVINMAX220-MAX249 +5V-Powered, Multi-Channel RS-232 Drivers/Receivers ELECTRICAL CHARACTERISTICS MAX223/MAX230-MAX241 (continued) (MAX223/230/232/234/236/237/238/240/241 Voc = +5V 10%, MAX233/MAX235 Voc = 5V 25%, C1-C4 = 1.0uF, MAX231/MAX239 Voc = 5V 10%, V+ = 7.5V to 13.2V, Ta = Tein to Taax. unless otherwise noted.) PARAMETER CONDITIONS MIN TYP MAX UNITS Normal operation SHDN = 5V (MAX223) 0.8 1.2 Ta = 425C SHDN = OV (MAX235/236/240/241) RS-232 Input Threshold Low ve ey Vv cc = Shutdown (MAX223) SHDN = OV, 0.6 5 EN = 5V (R4in, R5IN) Normal operation SHON = 5V (MAX223) 1.7 2.4 _ SHDN = OV (MAX235/236/240/241) RS-232 Input Threshold High vA = a c Vv cc = Shutdown (MAX223) SHDN = Ov, 1.5 2.4 EN = 5V (R4in, RSin) RS-232 Input Hysteresis Vcc = 5V; no hysteresis in shutdown 0.2 0.5 1.0 v RS-232 Input Resistance Ta = +25C, Voc = 5V 3 5 7 kQ TTL/CMOS Output Voltage Low lout = 1.6mA (MAX23 1-233 louT = 3.2mA) 0.4 v TTL/CMOS Output Voltage High lout = 1.0mA 3.5 Vcc-0.4 v OV < Rout $ Vcc; TTL/CMOS Output Leakage Current EN = OV (MAX223); EN = Voc (MAX235-241) 0.05 +10 HA MAX223 600 Receiver Output Enable Time Normal ns operation MAX235/236/239/240/241 400 MAX223 900 Receiver Output Disable Time Normal ns operation MAX235/236/239/240/241 250 AS-232 IN Normal operation 0.5 10 Propagation Delay out UCMOS SHDN = OV tPHLS 40 Hs CL=150pF | (MAX223) tPLHS 40 MAX223/MAX230/MAX234-241 Ta = +25C, Voc = 5V 3 54 30 RL = 3kQ to 7kQ, CL = 50pF to 2500pF, . measured from +3V to -3V or -3V to +3V Transition Region Slew Rate Vius MAX23 1/MAX232/MAX233 Ta = +25C, Voc = 5V 4 30 RL = 3kQ to 7kQ, CL = 50pF to 2500pF, measured from +3V to -3V or -3V to +3V Transmitter Output Resistance Voc = V+ = V- = OV, VouT = +2V 300 Q Transmitter Out Short-Circuit Current +10 mA 6 MAAXIAA I TO+5V-Powered, Multi-Channel RS-232 Drivers/Receivers Typical Operating Characteristics VoH (v) Vo. {V} MAX223/MAX230/MAX234-241 TRANSMITTER OUTPUT VOLTAGE (Vou) TRANSMITTER OUTPUT vs. LOAD CAPACITANCE AT TRANSMITTER SLEW RATE VOLTAGE (Vou) vs. Vec DIFFERENT DATA RATES vs, LOAD CAPACITANCE 85 74 ] 2s 7 + TRANSMITTER LOADED 3.9 H- 70 L 1 TRANSMITTER i a ! LOADED : = 68 |. TSOKBITSISEC = 2 TRANSMITTERS = BOKBITS/SEC My *s SRANS | S| zonersisec as = LOADED | = Ty=425C 64 | _Ta= 725C a 3 70 C1-C4 = 1pF 1 Voc = +5V Teague oo |g TRANSMTERS LowoeD LOADED = 2 FOR = 4 TRANSMITTERS 50 28008 C1-C4= IF LOADED 65 6.0 l 1 1 45 5.0 55 0 6500 1000,S1500 2000-2500 o 5500 1000S1500 2000-2500 Vee (V) LOAD CAPACITANCE (pF) LOAD CAPACITANCE (pF) TRANSMITTER OUTPUT VOLTAGE (VoL) TRANSMITTER OUTPUT vs. LOAD CAPACITANCE AT TRANSMITTER OUTPUT VOLTAGE V+, V- so VOLTAGE (VoL) vs. Vec 0 DIFFERENT DATA RATES 0 vs. LOAD CURRENT ~ TIRANS- Ta=425C OO Tins TT MITTERS C1-C4= tpF 6.2 LVcc = +5V _ 8 r= 65 LOADED TRANSMITTER J 3 TRANSMITTERS LOADED 5 = pA | RL=2kQ re L 3k02 IT 260008 oes Cae pe > were [I | if W ~e 4 cc = +5V + 10 6.6 a 2 Ci-ca=ipe [| l | 1 - i V4 AND V- -V- LOADED, IV LOADED, 7 ' = sa|- anes 2 optima mie? ih 4 = 6 \ 0 1 TRANS- s 20KBITS/SEC - = 5 : go [MITER 70 F 2 ALL TRANSMITTERS UNLOADED LOADED = 4f4 | 2TRANS. 3 TRANS: aay 6 | Os iP -85 EMITTERS aS LOADED 74 eh tet 4 LOADED aS rt 8 a tt ~9.0 | -76 -10 | L 45 50 55 0 500 1000 = 1500 2000 2800 0 5 10 15 2 25 30 35 40 45 SO vee (W) LOAD CAPACITANCE (pF) CURRENT (mA) V+, V- WHEN EXITING SHUTDOWN (1,.F CAPACITORS) SHUTDOWN POLARITY IS REVERSED FOR THE MAX241 MAXIIA 6PEXVW-OcCCXVANMAX220-MAX249 +5V-Powered, Multi-Channel RS-232 Drivers/Receivers ABSOLUTE MAXIMUM RATINGSMAX225/MAX244-MAX249 Supply Voltage (Voc) 0... cere eee rreererenneee -0.3V to +6V Input Voltages Ti. ENA, ENB, ENR, ENT, ENRA , cecvevessesstseteseesseanenee -0.3V to (Veg + 0.3V) Continuous Power Dissipation (Ta = +70C) 28-Pin Wide SO (derate 12.50mW/C above +70C) ..1000mW 40-Pin Plastic DIP (derate 11.11mW/C above +70C) .611mw 44-Pin PLCC (derate 13.33mW/C above +70C)....... 1067mW Ou Short Circuit (1 output at a time) Tout toGND. Rout tO GND oes seteenenteriees -0.3V to (VCC + 0.3V) Operating Temperature Ranges: MAX225C _ __, MAX24_C_ _ MAX225E __, MAX24_E__ Storage Temperature Range.......... ,.Continuous besttceeens Continuous Note 3: Input Voltage measured with transmitter output in a high-impedance state, shutdown, or Vcc = OV. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICSMAX225/MAX244-MAX249 (MAX225 ic = 5.0V +5%; MAX244-MAX249 Voc = +5.0V + 10%, external capacitors C1-C4 = 1pF, Ta = Tin to Tax, unless other- Lead Temperature (soldering, 10 sec)............ 0C to +70C 40C to +85C 65C to +160C wise noted, PARAMETER | CONDITIONS | MIN TYP MAX UNITS RS-232 TRANSMITTERS Input Logic Threshold Low 1.4 0.8 Vv Input Logic Threshold High 2 1.4 Vv Normal operation 10 50 Logic Pull-Up/Input C nt Tabies1A-1D 9 p/input Curre es Shutdown $0.01 #1 WA Data Rate Tables1A-1D, Normal operation 120 64 kbits/sec Output Voltage Swing All transmitter outputs loaded with 30k to GND +5 +7.5 v ENA, ENB, ENT, ENTA, ENTB = Voc, Vout = 15V +0.01 +25 Output Leakage Current (Shutdown) Tables1A-1D pA Vcc = OV, Vout = 15V +0.01 +25 Transmitter Output Resistance Voc = V+ = V- = OV, Vour = 2V (Note 4) 300 10M Q Output Short-Circuit Current Vout = OV +7 +30 mA RS-232 RECEIVERS RS-232 Input Voltage Operating Range +25 Vv RS-232 Input Threshold Low Voc = 5V 0.8 1.3 Vv RS-232 Input Threshold High Vcc = 5V 1.8 2.4 Vv RS-232 Input Hysteresis Voc = 5V 0.2 0.5 1.0 v RS-232 Input Resistance 3 5 7 kQ TTL/CMOS Output Voltage Low lout = 3.2mA 0.2 0.4 Vv TTL/CMOS Output Voltage High lout = -1.0mA 3.5 Vec-0.2 Vv S ing Vi = GND -2 -10 TTL/CMOS Output Short-Circuit Current oureing OUT mA Sinking Vout = Vcc 10 30 Normal operation, outputs disabled, TTL/CMOS Output Leakage Current Tables 1A-1D, OV < Vout < Vcc, ENR. = Voc +0.05 +0.10 pA 8 PAAXISIA TO+5V-Powered, Multi-Channel RS-232 Drivers/Receivers ELECTRICAL CHARACTERISTICSMAX225/MAX244-MAX249 (continued) (MAX225 Vog = 5.0V 45%; MAX244-MAX249 Voc = +5.0V 410%, external capacitors C1-C4 = 1pF, Ta = Tin to Taax. unless other- wise noted. PARAMETER | CONDITIONS [ MIN TYP MAX [ UNITS POWER SUPPLY AND CONTROL LOGIC Operating Supply Voltage MAX225 478 6.28 Vv MAX244-MAX249 45 .5 MAX225 10 20 No Load Vcc Supply Current (Normal Operation) MAX244-MAX249 u 30 mA 3kQ loads on all MAX225 40 outputs MAX244-MAX249 57 Ta = +25C 8 25 Shutdown Supply Current Tac Twin to Tuax 50 WA Leakage Current +1 pA Control Input Threshold Low 1.4 0.8 Vv Threshold High 2.4 1.4 AC CHARACTERISTICS Ci = 5OpF to 2500pF, RL = 3kQ to 7kQ, Transition Slew Rate Voc = 5V, Ta = +25C, 5 10 30 Vius measured from +3V to -3V or -3V to +3V Transmitter Propagation Delay tPHLT 13 3.6 TTL to RS-232 (Normal Operation), HS Figure 1 IPLHT 15 3.5 Receiver Propagation Delay tPHLR 0.6 15 TTL to RS-232 (Normal! Operation), ps Figure 2 tPLHR 0.6 1.5 Receiver Propagation Delay tPHLS 0.6 10 TTL to RS-232 (Low Power Mode), ys Figure 2 tPLHS. 3.0 10 Transmitter + to - Propagation Delay Difference (Normal Operation) 'PHLT - tPLHT 350 ns Receiver + to - Propagation Delay Difference (Normal Operation} {PHLT -IPLHT 350 ns Receiver-Output Enable Time, Figure 3 | ten 100 500 ns Receiver-Output Disable Time, Figure 3. | tpr 100 500 ns MAX246-249 5 s , (excludes charge-pump startup) e Transmitter Enable Time teT MAX225/MAX245-MAX249 40 : ms (includes charge-pump startup) Transmitter Disable Time, Figure 4 toT 400 ns Note 4: The 3000 minimum specification complies with EIA/TIA-232E, but the actual resistance when in shutdown mode or Vcc = 0 is 10MQ as is implied by the leakage specification. MAXUM 9 6PCXVIN-OCCXVNMAX220-MAX249 +5V-Powered, Multi-Channel RS-232 Drivers/Receivers TRANSMITTER SLEW RATE (V/s) 10 TRANSMITTER SLEW RATE vs. LOAD CAPACITANCE Veg = SV EXTERNAL POWER SUPPLY ] CAPACITORS 1 pF DATA RATE 40kb/s 8 TRANSMITTERS LOADED 3k2 = _~] 0 1 2 3 4 5 LOAD CAPACITANCE (nF) MAX225/MAX244-MAX249 OUTPUT VOLTAGE vs. LOAD CURRENT FOR V+ AND V- ! V+ AND V- LOADED EITHER V+ OR V- LOADED Vcc = 5V EXTERNAL CHARGE PUMP CAPACITORS 1 uF | WITH 8 TRANSMITTERS DRIVING 5kQ AND T 2000pF AT 20kbits/s oH V- LOADED --V+ AND V- LOADED = V+ LOADED 0 5 0 15 20 25 30 35 LOAD CURRENT (mA) OUTPUT VOLTAGE {V) ware Hon eh aw G o TRANSMITTER OUTPUT VOLTAGE (V+/V-) Typical Operating Characteristics TRANSMITTER OUTPUT VOLTAGE vs. LOAD CAPACITANCE AT DIFFERENT DATA RATES LOADED WITH 5kc> 40kb/s 60kb/s 200kb/s 100kb/s 1 ALL CAPACITORS 2 3 4 5 LOAD CAPACITANCE (nF) MAAXILMM+5V-Powered, Multi-Channel RS-232 Drivers/Receivers V+ - OV OUTPUT Vec OUTPUT F-- GND y- ut ei wrt its _ + 4 tans * EXCEPT FOR R2 ON THE MAX243 WHERE -3V (S USED Figure 1. Transmitter Propagation Delay Timing Figure 2. Receiver Propagation Delay Timing EN . axour Rx IN RX Voc -2V +3V SHON A. TEST CIRCUIT oo 150pF w EN INPUT 15 : av mat OUTPUT DISABLE TIME (toT} EN we OUTPUT ENABLE TIME (ten) RECEIVER OUTPUTS B. ENABLE TIMING EN EN INPUT | m me QUIPUT DISABLE FiME (10a) VaH ~~" , ye ==> VoH-05V RECEIVER : OUTPUTS : Voc -2V --- Vol +0 5V Vor : C DISABLE TIMING Ve 4 | ov A TIMING DIAGRAM TORO 1x 50pF teal B. TEST CIRCUIT ~ Figure 3. Receiver-Output Enable and Disable Timing MAKUM Figure 4. Transmitter-Output Disable Timing 1 6VCXVIN-OCCXVUWNMAX220-MAX249 +5V-Powered, Multi-Channel RS-232 Drivers/Receivers Table 1a. MAX225 Control Pin Configurations ENT ENR OPERATION STATUS TRANSMITTERS RECEIVERS 0 0 Normal Operation All Active Ail Active 0 1 Normal Operation All Active All 3-State 1 0 Shutdown All 3-State Ail Low-Power Receive Mode 1 1 Shutdown All 3-State All 3-State Table 1b. MAX245 Control Pin Configurations a OPERATION TRANSMITTERS RECEIVERS ENT ENR STATUS TA1-TA4 TB1-TB4 RAT-RAS RB1-RB5 0 0 Normal Operation All Active All Active All Active All Active . : . RA1-RA4 3-State RB1-RB4 3-State 0 1 Normal Operation All Active All Active RAS Active RBS Active Ail Low Power All Low Power 1 0 Shutdown All 3-State All 3-State Receiver Mode Receiver Mode RA1-RA4 3-State RB1-RB4 3-State 1 1 Shutdown All 3-State All 3-State RA5 Low-Power RA5 Low-Power Receiver Mode Receiver Mode Table 1c. MAX246 Control Pin Configurations on OPERATION TRANSMITTERS RECEIVERS EN ENB STATUS TA1-TA4 TB1-TB4 RA1-RAS RB1-RBS 0 0 Normal Operation | All Active All Active All Active All Active . . . RB1-RB4 3-State 0 1 Normal Operation All Active All 3-State All Active RBS Active 1 0 | Shutdown All 3-State All Active Rae Rae ae | All Active RA1-RA4 3-State RB1-RB4 3-State 1 1 Shutdown All 3-State All 3-State RAS Low-Power RAS Low-Power Receiver Mode Receiver Mode 12 MAAXLM+5V-Powered, Multi-Channel RS-232 = J Drivers/Receivers Table 1d. MAX247/248/249 Control Pin Configurations TRANSMITTERS RECEIVERS MAX247 | TA1-TA4 | TB1-TB4 RA1-RA4 RB1-RBS ENTA | ENTS |ENRA|ENRB| OPERATION STATUS MAX248 | TA1-TA4 | TB1-TB4 RA1~RA4 RB1-RB4 MAX249 | TA1-TA3 | TB1-TB3 RA1~RAS RB1-RBS 0 0 0 0 Normal Operation All Active | All Active | Ali Active All Active All 3-State, except 0 0 0 1 Normal Operation All Active | All Active | All Active RB5 stays active on MAX247 0 0 1 0 Normal Operation All Active | All Active | All 3-State All Active All 3-State, except 0 0 1 { Normal Operation All Active | All Active | All 3-State RBS5 stays active on MAX247 0 1 0 0 Normal Operation All Active | All 3-State] All Active All Active All 3-State, except 0 1 0 1 Normal Operation All Active | All 3-State| All Active RB65 stays active on MAX247 0 4 1 0 Normal Operation All Active | All 3-State| All 3-State All Active All 3-State, except 0 1 1 1 Normal Operation All Active | All 3-State | All 3-State RBS stays active on MAX247 { 0 0 0 Normal Operation All 3-State | All Active | All Active All Active All 3-State, except 1 0 0 1 Normal Operation All 3-State | All Active | All Active RBS stays active on MAX247 1 0 1 0 Normal Operation All 3-State] All Active | All 3-State All Active All 3-State, except 1 0 1 1 Normal Operation All 3-State | All Active | All 3-State RB5 stays active on MAX247 Low-Power Low-Power 1 1 0 0 Shutdown All 3-State | All 3-State Receive Mode Receive Mode Low-Power All 3-State, except 1 1 0 1 Shutdown All 3-State | All 3-State Receive Mode RBS stays active on ecem MAX247 Low-Power 1 4 1 0 Shutdown All 3-State | All 3-State | All 3-State Receive Mode All 3-State, except 1 4 1 4 Shutdown All 3-State | All 3-State | All 3-State RBS stays active on MAX247 MAAXLMA 13 6PCXVIN-OCCXVWNMAX220-MAX249 +5V-Powered, Multi-Channel RS-232 Drivers/Receivers Detailed Description The MAX220-MAX249 contain four sections: dual charge- pump DC-DC voltage converters, RS-232 drivers, RS-232 receivers, and receiver and transmitter enable control inputs. Dual Charge-Pump Voltage Converter The MAX220-MAX249 have two internal charge-pumps that convert +5V to +10V (unloaded) for RS-232 driver operation. The first converter uses capacitor C1 to double the +5V input to +10V on C3 at the V+ output. The second converter uses capacitor C2 to invert +10V to -10V on C4 at the V- output. A smail amount of power may be drawn from the +10V (V+) and -10V (V-) outputs to power external circuitry (see Typical Operating Characteristics), except on the MAX225 and MAX245-MAX247, where these pins are not available. V+ and V- are not regulated, so the output volt- age drops with increasing load current. Do not load V+ and V- to a point that violates the minimum +5V EIA/TIA-232E driver output voltage when sourcing current from V+ and V- to external circuitry. When using the shutdown feature in the MAX222, MAX225, MAX230, MAX235, MAX236, MAX240, MAX241 and MAX245-MAX249 avoid using V+ and V- to power external circuitry. When these parts are shut down, V- fails to OV, and V+ falls to +5V. For applications where a +10V external supply is applied to the V+ pin (instead of using the internal charge pump to generate +10V), the C1 capacitor must not be installed and the SHDN pin must be tied to Voc. This is because V+ is internally con- nected to Veg in shutdown mode. RS-232 Drivers The typical driver output voltage swing is +8V when loaded with a nominal 5kQ RS-232 receiver and Voc = +5V. Output swing is guaranteed to meet the EIA/TIA-232E and V.28 specification, that calls for +5V minimum driver out- put levels under worst-case conditions. These include a minimum 3kQ load, Voc = +4.5V, and maximum operat- ing temperature. Unloaded driver output voltage ranges from (V+ -1.3V) to (V- +0.5V). Input thresholds are both TTL and CMOS compatible. The inputs of unused drivers can be left unconnected since 400kQ input pull-up resistors to Veg are built-in. The pull- up resistors force the outputs of unused drivers low because all drivers invert. The internal input pull-up resis- tors typically source 12yA, except in shutdown mode where the pull-ups are disabled. Driver outputs turn off and enter a high-impedance statewhere leakage current is typically microamperes (maximum 25yA)when in shut- down mode, in three-state mode, or when device power is removed. Outputs can be driven to +15V. The power-sup- ply current typically drops to 8yA in shutdown mode. 14 The MAX239 has a receiver 3-state control line, and the MAX223, MAX225, MAX235, MAX236, MAX240 and MAX241 have both a receiver 3-state control line and a low-power shutdown control. The receiver TTL/CMOS outputs are in a high-impedance 3-state mode whenever the 3-state ENable line is high, and are also high-imped- ance whenever the shutdown contro! line is high. When in low-power shutdown mode, the driver outputs are turned off and their leakage current is less than 1pA with the driver output pulled to ground. The driver output leak- age remains less then 1pA, even if the transmitter output is backdriven between OV and (Vcc + 6V). Below -0.5V the transmitter is diode clamped to ground with 1kQ series impedance. The transmitter is also zener clamped to approximately Voc + 6V, with a series impedance of 1kQ. The driver output slew rate is limited to less than 30V/us as required by the EIA/TIA-232E and V.28 specifications. Typical slew rates are 24V/us unloaded and 10V/y"s loaded with 3Q and 2500pF. RS-232 Receivers EIA/TIA-232E and V.28 specifications define a voltage level greater than 3V as a logic 0, so all receivers invert. Input thresholds are set at 0.8V and 2.4V, so receivers respond to TTL level inputs as well as EIA/TIA-232E and V.28 levels. The receiver inputs withstand an input overvoltage up to +25V and provide input terminating resistors with nominal 5kQ values. The receivers implement Type 1 interpretation of the fault conditions of V.28 and EIA/TIA-232E. The receiver input hysteresis is typically 0.5V with a guar- anteed minimum of 0.2V. This produces clear output tran- sitions with slow-moving input signals, even with moderate amounts of noise and ringing. The receiver propagation delay is typically 600ns and is independent of input swing direction. Low-Power Receive Mode The low-power receive-mode feature of the MAX223, MAX242, and MAX245-MAX249 puts the IC into shutdown mode, but still allows it to receive information. This is important for applications where systems are periodically awakened to look for activity. Using low-power receive mode, the system can still receive a signal that will acti- vate it on command and prepare it for communication at faster data rates. This operation conserves system power. MAX243Negative Threshold The MAX243 is pin compatible with the MAX232A, differing only in that RS-232 cable fault protection is removed on one of the two receiver inputs. This means that control lines such as CTS and RTS can either be driven or left floating without interrupting communication. Different cables are not needed to interface with different pieces of equipment. MAXIIA a+5V-Powered, Multi-Channel RS-232 The input threshold of the receiver without cable fault pro- tection is -0.8V rather than +1.4V. Its output goes positive only if the input is connected to a control line that is actively driven negative. If not driven, it defaults to the 0 or OK to send state. Normally, the MAX243s other receiver (+1.4V threshold) is used for the data line (TD or RD), while the negative threshold receiver is connected to the control line (DTR, DTS, CTS, RTS, etc.). Other members of the RS-232 family implement the optional cable fault protection as specified by EIA/TIA- 232E specifications. This means a receiver output goes high whenever its input is driven negative, left floating, or shorted to ground. The high output tells the serial com- munications IC to stop sending data. To avoid this, the control lines must either be driven or connected with jumpers to an appropriate positive voltage level. Shutdown-MAX222-MAX242 On the MAX222, MAX235, MAX236, MAX240, and MAX241, all receivers are disabled during shutdown. On the MAX223 and MAX242, two receivers continue to operate in a reduced power mode when the chip is in shutdown. Under these conditions, the propagation delay increases to about 2.5ys for a high-to-low input transition. When in shutdown, the receiver acts as a CMOS inverter with no hysteresis. The MAX223 and MAX242 also have a receiver output enable input (EN) that allows receiver out- put control independent of SHDN. With all other devices, SHDN also disables the receiver outputs. The MAX225 provides five transmitters and five receivers, while the MAX245 provides ten receivers and eight trans- mitters. Both devices have separate receiver and trans- mitter-enable controls. The charge pumps turn off and the devices shutdown when a logic high is applied to the ENT input. In this state, the supply current drops to less than 25pA and the receivers continue to operate in a low- power receive mode. Driver outputs enter a high-imped- ance state (three-state mode). On the MAX225, all five receivers are controlled by the ENR input. On the MAX245, eight of the receiver outputs are controlled by the ENR input, while the remaining two receivers (RA5 and R85) are always active. RA1-RA4 and RB1-RB4 are put in a three-state mode when ENR is a logic high. Receiver and Transmitter Enable Control Inputs The MAX225 and MAX245-MAX249 feature transmitter and receiver enable controls. The receivers have three modes of operation: full-speed receive (normal active), three-state (disabled), and tow- power receive (enabled receivers continue to function at lower data rates). The receiver enable inputs control the Drivers/Receivers full-speed receive and three-state modes. The transmit- ters have two modes of operation: full-speed transmit (normal active) and three-state (disabled). The transmitter enable inputs also control the shutdown mode. The device enters shutdown mode when all transmitters are disabled. Enabled receivers function in the low-power receive mode when in shutdown. Tables 1A-1D define the control states. The MAX244 has No control pins and is not included in these tables. The MAX246 has ten receivers and eight drivers with two control pins, each controlling one side of the device. A logic high at the A-side control input (ENA) causes the four A-side receivers and drivers to go into a three-state mode. Similarly, the B-side control input (ENB) causes the four B- side drivers and receivers to go into a three-state mode. As in the MAX245, one A-side and one B-side receiver (RAS and RBS) remain active at all times. The entire device is put into shutdown mode when both the A and B sides are dis- abled, (ENA = ENB = +5V). The MAX247 provides nine receivers and eight drivers with four contro! pins. The ENRA and ENRB receiver enable inputs each contro! four receiver outputs. The ENTA and ENTB transmitter enable inputs each control four drivers. The ninth receiver (RB5) is always active. The device enters shutdown mode with a logic high on both ENTA and ENTB. The MAX248 provides eight receivers and eight drivers with four control pins. The ENRA and ENRB receiver enable inputs each control four receiver outputs. The ENTA and ENTB transmitter enable inputs control four dri- vers each. This part does not have an always-active receiver. The device enters shutdown mode and trans- mitters go into a three-state mode with a logic high on both ENTA and ENTB. The MAX249 provides ten receivers and six drivers with four control pins. The ENRA and ENRB receiver enable inputs each control five receiver outputs. The ENTA and ENTB transmitter enable inputs control three drivers each. There is no always-active receiver. The device enters shutdown mode and transmitters go into_a_three- state mode with a logic high on both ENTA and ENTB. In shutdown mode, active receivers operate in a low-power receive mode at data rates up to 20kbits/s. Applications Information Figures 5 through 25 show pin configurations and typical operating circuits. In applications that are sensitive to power-supply noise, Voc should be decoupled to ground with a capacitor of the same value as C1 and C2 con- nected as close as possible to the device. 15 MAXIZA 6PCXVW-OCCXVINMAX220-MAX249 +5V-Powered, Multi-Channel RS-232 a a Drivers/Receivers TOP VIEW VINPUT +5V INPU 03 _ x 7 + >_____}|-_ C1+ 14] Voc op 16 | "2 maxim [2 eo wns ov veh 2d stay = 4 + ct [3] MAaxz20 14] Tour Slt Fl oy vor TAGE DOUBLER C2 43] RI 4 [4 MAX232A 3] " a C2+ H10V TO -10V V. 6 -10V c2- [5] 2} Riou Cer 5} og VOLTAGE INVERTER = C4 V- [6] 11} THIN 5V = Tour [7] HO} T2iN 400k Ran [8] 9] R2out in Fun Tour] 14 +5 TTL/CMOS 400k RS-232 DIP/SO INPUTS * OUTPUTS | 10) T21n : T2ouTy 7 N > J CAPACITANCE (uF) 12] Rtour Rin | 13_4 DEVICE C1 C2 C3 C4 C5 TIL/CMOS 5k RS-232 MAX220. 47 47 #10 10 47 OUTPUTS eomle | Mes 9] 2 = MAX232. 10 10 10 10 10 L wt MAX232A 0.1 O1 O1 O1 01 es GND L Li Figure . MAX220/232/232A Pin Configuration and Typical Operating Circuit 5V INPUT TOP VIEW C3 ait CAPACITORS 0. Aur Cy) fy = 7 2 Vcc 3 ei yy +5V TO +10V Ve ad oo TH oy. VOLTAGE DOUBLER _ _ 5 . TT ev Li] 20) SHON co | +10V TO -10V ym wc.) EN [4] 18] SHON C+ [2] Tal Vee TT op. VOLTAGE INVERTER PL C4 t+ [2| 17] Vee V+ [3 48] GND +5V ~ C1 400k [3] 6) GNo 4) AAAXLAA 7] Tour 12) Ty Tour | 15 c1-[4 NW cats MAX222 NC ie maxim [5] Nour Mace EL" cus wv 8-292 Ca [5 MAX222 Tra] Rim c2-[6 15] Ri INPUTS 400k OUTPUTS MAX242 at] T2in Ny T2our| 8 c2- [| 3) Boor = [2 ia) Rtour v-[7 2] Tin = our [2 13] NC. Teour |g Ha] 12 Ron] 9 2) Tm f 413] Riour | Rin] 14 TTL{CMOS R2 R2 5k RS-232 w [9 fro] R2our Reour [ro] fii] Taw OUTPUTS hse DIP/SO SSOP PIN NUMBERS ARE FOR DIP/SO PACKAGES ONLY Figure 6. MAX222/MAX242 Pin Configuration and Typical Operating Circuit 16 MAAXAIA+5V-Powered, Multi-Channel RS-232 = = Drivers/Receivers +5V INPUT TOP VIEW 4, = i7 Ls our 8 ct Vec ghee sot aol * 45070 410V e MTT ot. VOLTAGE DOUBLER 4 aod C2 13 je ET 02+ +10V TO -10V T30ut 74 | 20] Tour VOR =p 12] 0 VOLTAGE INVERTER = FL 4 gue oJ = : . + Hour [2 B TSN +5V = = 400kQ T20uT TST AnAxIM NG Taw [4] MAx230 [17] sHuToOWN Tin [5 | 6, TSour GND [6 | 15] Tan 5V Veco [7 14 4 = pal 150 Tucmos |, 14] Taw z Tout] 1 | S-232 Ci+ 8B 13] v- INPUTS | J y { OUTPUTS V+ [9 | 42} c2- C1 [ro] 1] cae DIP/SO 17 SHUTDOWN r 6 Figure 7. MAX230 Pin Configuration and Typical Operating Circuit TOP VIEW , +5V INPUT +7 5V 10 +12 a] ral ae = =, 13 (15) c- [2] 13] Veo Te, Vee y [4 J 8 MAXIM | te] ~ V- 13 12} GND 1.OuF (3) vaxes1 [2 wel 12V 70-12 T2our (4 | 144] Tour VOLTAGE CONVERTER ; Ran | 5 40) Flin VF 62 [5| en # 1.0uF F2ouT [6 | A Rout 45V T2w [7 8] Tn [7] ' (10) 400K82 (13) 38| tin ie Mout} 112 5 DIP +5V TTLICMOS | AS-232 : = INPUTS 400K OUTPUTS C+ [| 6, Ve 2 12Nn F eau | C- [2] 5) Voc - (11) 12 (31 Anaxaaa Ha GND 9 Rlour 04 Tow [ef MAX23T 3] Tio TILCMOS 52 RS-232 Ran [| h2] Rt OUTPUTS INPUTS Reour [6 | N+) Btour 8] Bar rome ; Tan 7 | ho} Tn 5K NC [al lo] NC GND = PIN NUMBERS IN () ARE FOR SO PACKAGE = 12 (14) so Figure 8, MAX230 Pin Configurations and Typical Operating Circuit MAAXLM 6VCXVN-OCCXVN+5V-Powered, Multi-Channel RS-232 Drivers/Receivers +5 INPUT TOP VIEW o lv w +5Y Vec = N 2 Tn Tour | 5 r __ 1 ut os on {> TTL/CMOS SV RS-232 _J~. INPUTS 400k OUTPUTS Tan [4 a] Rout 1} Tom . T2ouT | 18 a pe | Tin {2 19) R2iN 3} Riout 13 | MAXUM 8) T20uT (<3 Rout $+ Rin 14s rw [a] MAx233 |t7) TIL cwos | ~ RS-232 WN po / 5k MAX233A OUTPUTS INPUTS, Tour [5 | ie} c2 20] R2our = Raw | 1g. + 7K {+ >< o [e is) 0 ~ g 5k . <q veo 17 | 4] ve (cts i . A (12) = (V+) C1+ [a | 13] Ct- (C14) Raat uaa 3 ote os ea 14 15 GNO 9 | 12] (C2) THESE PINS tag Cl- as (V-)C2- |10 14] C24 (C2-) au va C2- ( INTERNAL -10V POWER SUPPLY La V- (2) ) DIP/SO INTERNAL +10V. 14(8) POWER SUPPLY Ve SND GND [ets ( ] ARE FOR SO PACKAGE ONLY + . PO __ ; Figure 9. MAX233/MAX233A Pin Configuration and Typical Operating Circuit +5 INPUT | TOP VIEW Mprt _ ~ if ses ur p ne 8 TF zy ot 5VT0 10V V+ 1OuF =s 9 Neu 73] 61. VOLTAGE DOUBLER 10 few] C24 +10V TO -10V 12 1. WV TOuF => Hi] VOLTAGEINVERTER = YF 4 gy TOUT (4 | 6] T3cur | be- es Bee: Tour [2 | 5] Tout i 5V Tan! a] AAAXLAA fis) Tain 2 =| MAX234 Oke Thin [4 | ha} 13 pe 4 THN 7 Mout 4, 5 GND Poly. +5V (s| pee | 3 0k vec [6 | if C2- 3] Tan iD Tout] 3 of fol zs TILACMOS Ny | RS-232 V4 |e | ct INPUTS OUTPUTS y DIP/SO Le GND Ls Figure 10. MAX234 Pin Configuration and Typical Operating Circuit 18 AAAXIIA+5V-Powered, Multi-Channel RS-232 Drivers/Receivers +5V TOP VIEW 01 | =x Sn . 3 TIN Tout 14 ENR [4 ra] Voc 45V 1 400k Ene [2] Vee 1 aT 4 eet > 12 uN [3 26) ENT ov TOUT TN Lal An axim [25] 1 S08 , mOuT[s} MAX225 [24] TaN 25 T3IN aa 18 5V rout [6| [23] TsIN Swoon 3 R30UT [7| [22] RAOUT tN 4 > 17 aN [a] [21] ROUT 2 wv Pe TA0UT Ral [9] 20] RIN Sem TsOUT RAIN [10] rig] Ran 23 eLN > 16 Trout [iy] [18] TOUT ENT 26 > 15 TOUT fg 17] T40UT T3QUT GND [ig 16] T30UT 5< ROUT RAIN 40 GND [4 15] T.0UT 3a so 6 =| ROUT = RIN | ag Sk MAX225 Functional Description 7 PN | ag 5 Receivers 3 5 Transmitters Pr) RAQUT = RalN 19 2 Control Pins es 1 Receiver Enable (ENR) Pa Rg OUT = Rei 20 1 Transmitter Enable (ENT) ~ ES 1| ENR a PINS (ENR, GND, Vcc, TsOUT) ARE INTERNALLY CONNECTED 2{ ENR GND__GND CONNECT EITHER OR BOTH EXTERNALLY. T5OUT IS A SINGLE DRIVER. 13 4 Figure 11. MAX225 Pin Configuration and Typical Operating Circuit MAXIM 19 6PCXVIN-OCCXVNMAX220-MAX 249 +5V-Powered, Multi-Channel RS-232 Drivers/Receivers TOP VIEW +5V INPUT TTL/CMOS 1S RS-232 . INPUTS (J OUTPUTS Tour [71 | 24] pay T30uT [2 23] R3qur 16 Hour (3 22) 15 A 1 Tour [4 | NOI J21] SHUTDOWN 2 \ - R2n [5 | 20] EN 9 R2our [6] 19] T5our <] T2in [7| 18! Rain THIN [3] 17] Rout 6 Rtour [| 16] rayy Rin [10] Hts) tay _ TTLCMOS 237 R3our = Rn p24 RS-232 GND [14] 4] sour OUTPUTS {| ~<f r* } INPUTS Vcc 12] 13] RSiN 5k | DIP Figure 12. MAX235 Pin Configuration and Typical Operating Circuit 20 MAAXLAA+5V-Powered, Multi-Channel RS-232 Drivers/Receivers TOP VIEW +5 INPUT 1 Ou y } i + __! L 1.OaF 19 Voc 117+ sou = | ct 45V TO -+410V de T2124 gy. VOLTAGE DOUBLER BES sour 44| + +10V T0 -10V ye TAA 9. VOLTAGE INVERTER + 1 Oar _ ! T3our | 1 (4 24] T4out Thou] 2 > Tour [2 | 23] Row | Tour [3 | maa 22} Rout 8] Taw D T2our} 3 Riw a [4] wares (21) SHUTDOWN Trucwas AS-232 Rrour [| 20 EN INPUTS OUTPUTS Taw (6 | 19] 14 TAN [7] 18! T3IN GND [| 17| R3out J Vec [9] 16) Ran Cts fro] 5] Ve 5] Rout oS Rin] 4 > Ve in 4] co- 5k | C1- 12 13) co = po oe trucos |. 22) Rout pe DIP/SO OUTPUTS | 5k 17] Rout | = R3in fg 16 L. esp} Hl 4 5k ZOLEN F sHowf 2h GND = as Figure 13. MAX236 Pin Configuration and Typical Operating Circuit MAXIA 21 6PCXVIN-OCCXVINMAX220-MAX249 +5V-Powered, Multi-Channel RS-232 _ = Drivers/Receivers TOP VIEW OuF ad 2 hour i Voc vw BUT vow yo +5V 70 +10V , wep ey VOLTAGE DOUBLER 3 tour | +10V 10 -10 1 ME 14 e- VOLTAGE INVERTER vr Our wat . T3our fh] 1247 Tgut Tout [2 23] Rain | Teour [3 | [22] Reour | op Taw T2out 3 maxi SY tw [a] MANO? 24] To 400% Riour [5 | 20] t5qur 189 13 T3our J 1 | - rTyom " ur RS-232 ates Ty "3 "+ OUTPUTS w [| 19) Tay 400k Tn (7 | 18} T3iy 19F T4iy i> ___Taour p24 | GND [| 17] R3our m4 Voc 9] 6] Rin Cl+ fro| f15] y- V+ fia 4] C2- ct- fia] 113) cas DIP/SO TucMos = 23 | RS-232 OUTPUTS INPUTS Figure 14. MAX237 Pin Configuration and Typical Operating Circuit 22 MAAXIIAor +5V-Powered, Multi-Channel RS-232 Drivers/Receivers TOP VIEW +5V INPUT 10 Vcc WJ ture al Cis +5V TO 410V Ve whore al VOLTAGE DOUBLER 13 hour wal Cee +10V 70 -10 yf OMFS 1a oo. VOLTAGE INVERTER Th tue . SL T20UT (4 24, T3our Tout [2 Rin Fain [3] 22) R3cut mraam Reo [a] ifaxoag [20 Tam Tin Fe TrucMos J 5 120) Taoyt INPUTS. \ Riour [6| 19] T3in Ri (7| 8, TaN GND a | 17] Rout Voc [3] 16] Rain Cit [ro| iG Ve ia 5 vs faa] 14} 2. | Gt fra 13 C2+ 3 | pag DIP/SO | TTLCMOS RS-232 OUTPUTS P INPUTS 227 R3quT %3 R3IN | 23 | Zs I l 1T] Rout <i = Rain | 16 J 5k GND = +8 Figure 15. MAX238 Pin Configuration and Typical Operating Circuit MAAXIIA 6VCXVIN-OCCXUNMAX220-MAX249 +5V-Powered, Multi-Channel] RS-232 = a Drivers/Receivers 75V-13.2V TOP VIEW sow +5V INPUT INPUT Oyu fi KH, ls 6 ee V+ ay" +10V 70 +10 vb VOuF 7 | C- VOLTAGE INVERTER L hoe WI e Rout [| 24] Tun TTL/CMOS RS-232 rw [| 23) Toy INPUTS OUTPUTS GND [3] 22 | R2our Veo MAAXIAA (4 maxo3g [21] Ren Ve [5] 20] T2out 7 1 | Rtour 2 C+ [6] 119] Tour | _ Cc (7 18] R3in y- ro [8 17] R3our 22 2 RSW [9 | 16) T3IN RSOUT 1o| 15] NC. | 8-230 Raour 14] fia] fn Crug | ey INPUTS Rain fr2| 43] Tour DIP/SO " ie | [ 10 9 - 14 15 f-<t GND = Ts Figure 16. MAX239 Pin Configuration and Typical Operating Circuit 24 PRAAXILANi +5V-Powered, Muiti-Channel RS-232 = = Drivers/Receivers ove +5V INPUT VIEW 1.0uF Oia 25 Voc 26 T+ te] Ch SV 10 +10 Ve 1.QuF oS a7 ot VOLTAGE DOUBLER 28 te] & +5VT0-10 y- [2 1.0uF 7 29 c- VOLTAGE INVERTER Lt our +5V! ~ 400k yin F 1 Tout | 7 \ 52 [uD 2a B22525 z aa 27 368 wre wy OS ra xc oc be wy PLASTIC FP NC Rin T2qut Tout T3qut Tour R3n R3qut TSin N.C. TTL/CMOS INPUTS Rout i I l TTL/CMOS OUTPUTS RS-232 OUTPUTS R2ny 10 | ad RS-232 | INPUTS Figure 17. MAX240 Pin Configuration and Typical Operating Circuit MAK 25 6PCXVW-OCCXVWN 71MAX220-MAX 249 +5V-Powered, Multi-Channel RS-232 a a Drivers/Receivers 45V INPUT TOP VIEW 1OuF ; = 11 1 uF 12 C1 Vec y 3 F ye +5V 10 410V * WOHF 44] et VOLTAGE DOUBLER 15 out = aa| Cas +10V 10 -10 yt OT TE VOLTAGE INVERTER car T30ur [4 | 28} T4our 45VI = nour [a 27) ay 400k Tour [3 | [26]. R3qyt NAT nara [25] SRN SHOW . TTL/CM RS-232 Tam [6 | 23] Ra ne OUTPUTS Taw [7 | 122] Rgur" atour Fa 2H] 14m Riw [9 | 120) T3in a GNO [ro] [19] RSour* vec [aa] 13] Rs C+ [12| 17] V- Ve [13] +6] c2- Ct. [ra] jis] C2+ WIDE SO LOGIC | 26 RS-232 SSOP OUTPUTS | ~~] [7 INPUTS | 22 ~~ |} 9 5k | fn fl tad * R4 AND R65 IN MAX223 REMAIN ACTIVE IN SHUTDOWN A cy im +~ 5k p24, EN CEN) | SHON 2 NOTE: PINLABELSIN( ) ARE FOR MAX241 eNO = (SHDN) & 10 Figure 18. MAX241, MAX223 Pin Configuration and Typical Operating Circuit 26 PAAKIAA+5V-Powered, Multi-Channel RS-232 Drivers/Receivers TOP VIEW +5V INPUT ALL CAPACITORS 0 1pF O.1yF F ok = 16 1 Vec 2 mo Ct+ V+ +10V Ope 3 45V 70 410V TOT oy. VOLTAGE DOUBLER 4 C2 6 C1 te] 02+ +10V TO -10V [8 -t0v *O 6] Vec OnE a5 5 co. VOLTAGE INVERTER Pe OAuF vw (2 Hs] GNO i = c1- [3{ A4AXIAA 14] Tour MAX243 400k C24 fa] 13] RA dy Tw Tout} 14 } ae ce (8 fi2} Rtour TIL/CMOS ad RS-232 v- [6] aj Tt INPUTS wm ; OUTPUTS Taout (7| i Tain 1 ane raw [8 13} Rout DIPIS 12) Riout L Bin] 13 : fat a o TIeMos [ 5k 9-292 OUTPUTS INPUTS 9 RECEIVERINPUT | RI OUTPUT | A20UTPUT <-3V HIGH HIGH | 23V OPEN LOW LOW Rout = RIN : 5k GND 4 | a I= 15 Figure 19. MAX243 Pin Configuration and Typical Operating Circuit MA MAXKILIM 27 6PZXVW-OccTXVNMAX220-MAX249 +5V-Powered, Multi-Channel RS-232 Drivers/Receivers +5V Tur == Tur 21 + Th 1 TOP VIEW pre 9g | Ct vee 22 TH ct 4#5V TO +10V VOLTAGE DOUBLER Ve | tur t C2+ pe T_25| 2- +10V TO -10V VOLTAGE INVERTER v- T tyr Bee ee eee Tas OUT Voo MN, Tei0uT | 44= 222322323882 mY e gee2ceeeees 400k elf dfs fl bl - = tens 45 0 +5V 43 RaalN 7 [39 | Resin 400k Real [| 3a | Resin _TeN| 29 RailN [ 9 [a7 | Re2lN 5V Rar OUT [10 | MAXIAA 36 | RetiN 3 TagQUT SY + m~N Te3QUT | 42 RaOUT [14 | MAX244 [35] ABOUT ol ten a 00k TealN | 28 RagOUT [712 | [34] Re20UT its PasOUT [3 [sa } Rex0ur 4 | TOUT wv TeaouT| 41 RasOUT [ra] 32 | RpaDUT 400k TAIN [5 | Jai] ResOuT 18 | TadlN ar Taal [16 | 30] Teil Taal 47 | 29 | Tea g | RatlN h Rat IN | 36 rT qT [18] f:9} 20} |21) 22) 2a, fea} fas} fee} [27] 2a] aS 5k 29390 8A sereaa > 2 ZeESS758S" 2B 19 | RMOUL = = _ReOuT | 35 PLCC 8B | RazlN 5k 41 | Ra2OUT MAX244 Functional Description 7 | Rasin 10 Receivers Always Active 5k 5k 5 A-Side Receivers 5 B-Side Receivers 12 | RasQUT = L___ = _RegQuT | 38 8 Transmitters 6 Feat fea] 4 A-Side Transmitters 5k 5k 4 B-Side Transmitters 13 ROUT | ReaQUT | 32 No Contro! Pins 5 | RasiN Resin | 40 5k 5k 14] RasQUT = GND = ResQUT | 31 Le oT 19 Figure 20. MAX244 Pin Configuration and Typical Operating Circuit 28 PAAXIMA+5V-Powered, Multi-Channel RS-232 a a Drivers/Receivers +6V Wea 1 TOP VIEW = (40 Voc 45V 5V cla VT? ~~ Ea * TeiQUT a. _ > u eve (| a0} Voc ~ 400k | =e Tat uN 4 Tein | 38 Tain [2 | 139} ENT a | . ! a Tan [3 | 38! TeriN 1 | Tacour | Ny, | Teo0UT 23 Tash [a | 37} Teal ph 4 r Taaln [5 | es} Tsatn ee wos TealN | 7 aasOuT [6 | a5! Teal Raut [7 | faa} AesQUT 18 TUT wy nev it Tes0UT | 22 Lz E 400% & pasdUT Le] An arena [33) R200 al tat \ TeaN| 36 raoout [9] MAX245 foal ecouT Retour [| 31] Re2OUT 19 | TeaOUT H eV 45Y TesOUT] 21 Raul fr | H30) Fe\OUT of | $ aon | 4 | Raat fra] 91 Rest - 5 TaalN < TpalN | 35 dag (oF Ci 9 Baal [13 | 28] Razin 1 f Raat [14 | l27| ResiN lh miN Rel | 29 Rash [5 | 26} Real hy 5k Tai OUT 2 os | AOuT [16} 25] Resi 1 wwon = = AgOQUT! 30 Ta20UT [17 | 24] TeiOUT 12] Rael P Re2IN | 28 Tas0UT [ra I23| Ta2OUT - Tout [ra] 521 TesOUT a | 5k | 19 2: 4 6 Fel FA i. o| Ra20UT = | ReOUT| 31 NO be 21} TaeQUT oo <r 43) Ragin J NN RualN | 27 3) H Se DIP 5k | 5k alo | : MAX245 Functional Description 10 Receivers 5 A-Side Receivers (RA5 always active) 5 B-Side Receivers (RB5 always active) 8 Transmitters 4 A-Side Transmitters 4 B-Side Transmitters 2 Control Pins 1 Receiver Enable (ENR) 1 Transmitter Enable (ENT) RygOUT | 32 4 L RealN | 26 | = ReaQUuT le | Rasint } 25 p_t : 5k RasOUT | 34 Figure 21. MAX245 Pin Configuration and Typical Operating Circuit MAKLM 29 6bCXVW-OCCXVINMAX220-MAX249 +5V-Powered, Multi-Channel RS-232 a = Drivers/Receivers +5V Tyr TOP VIEW t 40 Voc [cov _ 16 | TOUT +SV 0 45V TeOuT| 24 Ena [1 | ssc 400k : S TailN [2 | 39] ENB 2 TaN | TeilN | 38 Taal [3] se] Tain iz | WOU gy SVN To20UT| 23 ; a OT e20UT | 23. Trai [4 | 37] Teall wo on o TaalN [5 | 36 Ta3tN 3] TaN | Taal | 37 RasQUT [6 | fa] Taal . a seaur| RaaOUt [7 | 54] RasOUT 18 | Tas0U s av SV a RagOUT [3 | MAXUM 3 | RegOUT 4] Tain | 8 400k Taal | 38 Radut [gf MAX246 faa] RpsauT * RarOUT [10 | Ist Re20UT 19 | TAQUT 4 48V Tea0UT | 21 Rati [13 | [30] Re: OUT van 4 Em wl as RaalN [12| 29] Ro IN 9 | Tad | TeaN | + ENA ENB | 39 RaalN (13| 2a] AeIN on wn Real (14 37] a3lN al un RaslN [15 | 26} ReaiN TarOUT [6 | ResiN ~ i Ta0UT [17 | j24' Te1QUT Tax0UT [ra] Fes} Tez0UT TAOUT [19] 22] TesOUT g| rwour = GND [o| 21} TedOUT a3 | Raat ~| DIP 5k | RasQUT = 34 MAX246 Functional Description 10 Receivers 5 A-Side Receivers (RA5 always active) 5 B-Side Receivers (RB5 always active) 8 Transmitters 4 A-Side Transmitters 4 B-Side Transmitters 2 Contral Pins Enable A-Side (ENA) Enable B-Side (ENB) 6 RaalN i _~ ent Resin | 25 | 69 5k ResOUT Figure 22. MAX246 Pin Configuration and Typical Operating Circuit 30 MAAXILAA To~~ +5V-Powered, Multi-Channel RS-232 Drivers/Receivers TOP VIEW Nee aia 40] Voc Tain [2 | 3a] ENTE Teal [| 3a} TasIN Tan Ca] 7] TaN Tan (5 | 36] Teal ResOUT [6 | 35] TealN RMOUT [5 | 34} ResOUT aaout [8 | aera [53] Res0uT Ra20UT fs] MAX247 32] Re20UT RmOUT [10] fai} ReyOUT ENRA fia] 39) ENR RaW fa] fag] RawlN Ryan [ra] a} ReolN Rast [ta] '27| Rein Real [v5 | 26) ApalN TaOUT [16 | los] RasIN Ta20UT [17| 24) TeOuT Tg 0UT fa] 23} Te0UT TaaOUT [19 Es Ta30UT GND a j21} TaqQut DIP MAX247 Functional Description 9 Receivers 4 A-Side Receivers 5 B-Side Receivers (Rps always active) 8 Transmitters 4 A-Side Transmitters 4 B-Side Transmitters 4 Control Pins Enable Receiver A-Side (ENRA) Enable Receiver B-Side (ENAB) Enable Transmitter A-Side (ENTA) Enable Transmitter B-Side (ENTB) ENTA TatOuT TaN Ta0UT c Ta2lN on +5V Vcc +5V +5V fay LF OV +BY 7 ENTB | 38 Tei0UT | 24 i Tain | 38 fp an Te20UT | 23 Te2iN _6 | ResOUT 2 7 a 3 4 8 _ 4} Tash ~ Ap asl 19 5 8 ~ Pas 5k Ra30UT = +5 0 +5V ts | 4 TOUT | 4 TaaQut +5V+5V 400k TagiN 2g Te30UT | 22 Figure 23, MAX247 Pin Configuration and Typical Operating Circuit MAAXLIM 31 6PCXVIN-OCCXVNMAX220-MAX249 +5V-Powered, Multi-Channel RS-232 Drivers/Receivers +5V iw >= IF = 204 A = TOP VIEW oo th vec ve (22 Tur 23 + a a) +5V 10 +10V VOLTAGE DOUBLER 06 ee tpt Cat V surte 22e222222 222 T_4] 02 +10V TO -10V VOLTAGE INVERTER wT e228 22 E3 82 3 = 6 [sl [atfal fell] 44) 143 42) 41 ja} e RagiN [7] [39 | Re3iN __ 14} TaN RailN [a | 3a | Real 2 Ta20UT ENRA [9 | [37 ; Rein _ RarOUF [10 MAXIM jas | ENRE 6 at ead 00k TealN | 30 RaZOUT [17 | MAX248 35 | ReiOUT 2 RasQUT [22 | 34} Ra20UT 3/ rout | Te30UT| 42 ROUT [13 | a3 | Re30UT * y t00k . TaalN [14 | [32 | PeaOUT 16{ TaslN Tesi | 29 4 32 | ~__ 5 Train [15 | [ar] Tein Taal (6 | 30 | TaeiN __ TpaQUT | 41 TaN [29 j Te3lN 100K I TT _ 17) Taal ___TeaiN | 28 telbe Fah ss JBe8steags*s S| RaslN | 37 PLCC 10 | RarQUT = PerOuT]35 7| Rain RaelN 3 5k MAX248 Functional Description 8 Recei Pp MY Ra RaOUl [ = at ceivers : . 6| RasiN reat 4 A-Side Receivers yet} on 4 B-Side Receivers ne | 8 Transmitters 12 RegQUT _| [LL = ResOUT| 33 4 A-Side Transmitters 5] BaalN Ban | 40. 4 B-Side Transmitters = og <i Rar 4 Control Pins Enable Receiver A-Side (ENRA) Enable Receiver B-Side (ENRB) _ Enable Transmitter A-Side (ENTA) Enable Transmitter B-Side (ENTB) Re4QUT | se 3) ROUT | = lee | [L$ sa ENRB | 36 GND i _ ed Figure 24, MAX248 Pin Configuration and Typical Operating Circuit 32 MA AXIAA wet+5V-Powered, Multi-Channel RS-232 | 7 = Re3QUT | 33 10 Receivers 5 A-Side Receivers RaalN Drivers/Receivers +5V T 20 | 24 = TOP VIEW upto Oe vec v2 WY se 23) oy. +5V TO +10V VOLTAGE DOUBLER 24 26 tur og] aren me RR EK BY E25] 9. +10V TO -10V VOLTAGE INVERTER BT Zzzaea asada aZz2 18| ENTA ENTS| 27 233 2S2888 2222 22225 23 | [a] 7] 1| TM OUT s5V 45V TaiOUT | 44 ; + 400K 15| TarIN TeilN | 30 . RaalN (7 | [39 | Real Ran Ce | [aa] Reatn 2 | Ta20UT bh ENRA [9 | 37 | Rein Rm OUT [70 | PAAXIM a6] ENRB 16] Ta2IN RAZOUT [79 | MAX249 35] ae10UT 3| Tas0UT ragOUT [a] Fa] Rez0UT Hes RaaOUT (43 | [33 | Re30UT er RasOUT [14 | 32 | ReaOUT Taal (15 | 31} ResOUT 8 | RariN Train [16 | [30] TeiIN T Wf [29 | Te2IN * mk 7 9 | Tea f aa 8 10, ROUT = = Pei0UT ToT Se hal hl po [24] (29) 23 a| 25} (26) [27 le 7 | RaalN Razin | 38 ESssrsnagnteZ ; IE 3B Ss oases le 3 | ce ae 5k 5k PLCC a1! RagOUT = = Rep0UT| 34 6 Ragin q Ragin | 39 _+ pt ag MAX249 Functional Description 12) RagOUT 5 1 5 B-Side Receivers 5k 6 Transmitters 13, FMOUT = ReaOUT 3 A-Side Transmitters 4| RasiN P ResiN| 41 3 B-Side Transmitters | | 5k 4 Control Pins Enable Receiver A-Side (ENRA) Enable Receiver B-Side (ENRB) g| ENRA Enable Transmitter A-Side (ENTA) L. Enable Transmitter B-Side (ENTB) HWY. 14| RasOUT Figure 25. MAX249 Pin Configuration and Typical Operating Circuit MAXIM 33 60CXVN-OCCXVNMAX220-MAX249 +5V-Powered, Multi-Channel RS-232 = = Drivers/Receivers Ordering Information (continued) PART TEMP. RANGE PIN-PACKAGE [ MAX232AC/D 0C to +70C Dice* MAX222CPN OC to +70C 18 Plastic DIP MAX232AEPE _-40C ta +85C 16 Plastic DIP MAX222CWN OFC to +70C 1B Wide SO MAX232AESE _-40C to +85C 16 Narrow SO MAX222C/D OC to +70C Dice MAX232A4EWE _-40C to +85C 16 Wide SO MAX222EPN -40C to +85C 18 Plastic DIP MAX232AEJE __-40C to +85C 16 CERDIP MAX222EWN -40C to +85C 18 Wide SO MAX232AMJE 55C 10 +125C 16 CERDIP MAX222EJN -40C to +85C 18 CERDIP MAX232AMLP-55C to +125C 20 LCC MAX222MJN -65C to +125C 18 CERDIP MAX233CPP OC to +70C 20 Plastic DIP MAX223CAl OC to +70C 28 SSOP MAX233EPP -40C to +85C 20 Plastic DIP MAX223CWI OC to +70C 28 Wide SO MAX233ACPP 0C to +70C 20 Plastic DIP MAX223C/D OC to +70C Dice* MAX233ACWP OC to +70C 20 Wide SO MAX223EAl -40C to +85C 28 SSOP MAX233AEPP __-40C to +85C 20 Plastic DIP MAX223EWI -40C to +85C 28 Wide SO MAX233AEWP _-40C to +85C 20 Wide SO MAX225CW! OC to +70C 28 Wide SO MAX234CPE OC to +70C 16 Plastic DIP MAX225EWI -40C to +B5C 28 Wide SO MAX234CWE 0C to +70C 16 Wide SO MAX230CPP OC to +70C 20 Plastic DIP MAX234C/O OC to +70C Dice* MAX230CWP OC to +70C 20 Wide SO MAX234EPE -40C to +85C 16 Plastic DIP MAX230C/D OC to +70C Dice* MAX234EWE -40C to +85C 16 Wide SO MAX230EPP -40C to +85C 20 Plastic DIP MAX234EJE -40C to +85C 16 CERDIP MAX230EWP -40C to +85C 20 Wide SO MAXZ34MJE 55C 104125C 16 CERDIP MAX230EJP -40C to +85C 20 CERDIP MAX235CPG OC to +70C 24 Wide Plastic DIP MAX230MJP -55C to+125C 20 CERDIP MAX235EPG -40C to +85C 24 Wide Plastic DIP MAX231GP0 OC to + 70C 14 Plastic DIP MAX235E0G -40C to +85C 24 Ceramic SB MAX231CWE OC to +70C 16 Wide SO MAX235MDG --85C to +125C 24 Ceramic SB MAX231CJD 0C to +70C 14 CERDIP MAX236CNG OC to +70C 24 Narrow Plastic DIP MAX231C/D OC to +70C Dice* MAX236CWG OC to +70C 24 Wide SO MAX231EPD -40C to +85C 14 Plastic DIP MAX236C/D OC to +70C Dice* MAX23 1EWE -40C to +85C 16 Wide SO MAX236ENG -40C to +85C 24 Narrow Plastic DIP MAX231EJD ~40C to +85C 14 CERDIP MAX236EWG -40C to +85C 24 Wide SO MAX231MdD -55C to+125C 14 CERDIP MAX236ERG -40C to +B5C 24 Narrow CERDIP MAX232CPE 0C to +70C 16 Plastic DIP MAX236MRG 55C to +125C 24 Narrow CERDIP MAX232CSE OC to +70C 16 Narrow SO MAX237CNG OC to +70C 24 Narrow Plastic DIP MAX232CWE OC to +70C 16 Wide SO MAX237CWG OC to +70C 24 Wide SO MAX232C/D OC to +70C Dice* MAX237C/D OC to +70C Dice* MAX232EPE -A0C to +85C 16 Plastic DIP MAX237ENG -40C to +85C 24 Narrow Plastic DIP MAX232ESE -40C to +85C 16 Narrow SO MAX237EWG -40C to +85C 24 Wide SO MAX232EWE -A0C to +85C 16 Wide SO MAX237ERG -40C to +85C 24 Narrow CERDIP MAX232EJE -A0C to +85C 16 CERDIP MAX237MBG 55C to +125C 24 Narrow CERDIP MAX232MJE -55C to +125C 16 CERDIP MAX238CNG OC to +70C 24 Narrow Plastic DIP MAX232MLP 65C to +125C 20LCC MAX238CWG OC to +70C 24 Wide SO MAX232ACPE OC to +70C 16 Plastic DIP MAX238C/D OC to +70C Dice* MAX232ACSE OC to +70C 16 Narrow SO MAX238ENG -40C to +85C 24 Narrow Plastic DIP MAX232ACWE OC to +70C 16 Wide SO * Contact factory for dice specifications. 34 MA AXKIAN+5V-Powered, Multi-Channel RS-232 a a Drivers/Receivers Ordering Information (continued) PART TEMP, RANGE PIN-PACKAGE MAX243CPE OC to +70C 16 Plastic DIP MAX238EWG -40C to +85C 24 Wide SO MAX243CSE OPC to +70C 16 Narrow SO MAX238ERG -40C to +85C 24 Narrow CERDIP MAX243CWE OC to +70C 16 Wide SO MAX238MRG -65C to +125C 24 Narrow CERDIP MAX243C/D 0C to +70C Dice* MAX239CNG OC to +70C 24 Narrow Plastic DIP MAX243EPE -40C to +85C 16 Plastic DIP MAX239CWG OC to +70C 24 Wide SO MAX243ESE -40C to +85C 16 Narrow SO MAX239C/D 0C to +70C Dice* MAX243EWE -40C to +86C 16 Wide SO { MAX239ENG -40C to +85C 24 Narrow Plastic DIP MAX243EJE -40C to +85C 16 CERDIP MAX239EWG -40C to +85C 24 Wide SO MAX243MJE -55C to +125C 16 CERDIP MAX239ERG -40C to +85C 24 Narrow CERDIP MAX244CQH OC to +70C 44 PLCC MAX239MRG ~55C to + 125C 24 Narrow CERDIP MAX244C/D OC to +70C Dice* MAX240CMH OC to +70C 44 Plastic FP MAX244EQH -40C to +85C 44 PLCC MAX240C/D 0C to +70C Dice* MAX245CPL OC to +70C 40 Plastic DIP { MAX241CAI OC to +70C 28 SSOP MAX245C/D OC to +70C Dice* MAX241CWl QC to +70C 28 Wide SO MAX245EPL -40C to +85C 40 Plastic DIP MAX241C/D OC to +70C Dice* MAX246CPL OC to +70C 40 Plastic DIP MAX241EAI -40C to +85C 28 SSOP MAX246C/D O to +70C Dice* MAX241EWI -40C to +85C 28 Wide SO MAX246EPL -40C to +85C 40 Plastic DIP { MAX242CAP 0C to +70C 20 SSOP MAX247CPL OC to +70C 40 Plastic DIP MAX242CPN OC to +70C 18 Plastic DIP MAX247C/D 0C to +70C Dice* MAX242CWN OC to +70C 18 Wide SO MAX247EPL -40C to +85C 40 Plastic DIP MAX242C/D OC to +70C Dice* MAX248CQH 0C to +70C 44 PLCC MAX242EPN -40C to +85C 18 Plastic DIP MAX248C/D OC to +70C Dice* MAX242EWN -40C to +85C 18 Wide SO MAX248EQH -40C to +85C 44 PLCC MAX242EJN -40C to +85C 18 CERDIP MAX249CQH 0C to +70C 44 PLCC MAX242MJN -55C to +125C 18 CERDIP MAX249EQH -40C to +85C 44 PLCC * Contact factory for dice specifications. MAXUM 35 6VCXVN-OCCXVWMAX220-MAX249 _ +5V-Powered, Multi-Channel RS-232 Drivers/Receivers Chip Topographies Veco GND Tigyt Run aor 11.829mm) o.120" (3.048mm) $$ aT Tt | Cr V~ Tagut Ran MAX231, MAX232 and MAX233 SHDN (MAX222/MAX242) V+ Cit EN Voc GND (MAX242) Rain R2out Tin 0.070" (1.778 mm) egg MAX220/222/232A/233A/242/243 CONNECT SUBSTRATE TO V+ Tlour Tgut Aout SHUTDOWN 0.138" | (351 mm) MAX230 and MAX234-239, MAX240, MAX241 SHUTDOWN PIN OF MAX234, MAX237, MAX238, MAX239, MAX240 AND MAX241 ARE INTERNALLY CONNECTED TO GROUND. Lpal esl r ch rm al 1c al ry pan Go i al et Be ae ; a 0.167" | (4.24 mm) 4 ca P| pe a ae = oy 2d cand a a: a =~ a i TealN Y (3.86 mm) MAX244/245/246/247/248/249 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 36 Maxim integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 1995 Maxim Integrated Products Printed USA MAXIAA js a registered trademark of Maxim Integrated Products.