NuUe4o1s RS232C LINE DRIVER/RECEIVER Wl GENERAL DESCRIPTION MM PACKAGE OUTLINE The NJUB401B is a RS232C line driver/receiver compos- ed of 3 drivers and 5 receivers. The drivers convert the input of TTL level signals into RS232C level signals and limit the slew rate below 30V/ us. The receivers accept the input levels both of RS-2320 standard minimum requirement level(23V) and TTL level. Furthermore, the hysteresis circuit and noise filter incorporated on each receiver ensures noise-free ope- ration. NJU6401BD NJUG4018M Wi FEATURES Hi PIN CONFIGURATION @ Based on the RS232C Standard @ 3 Drivers and 5 Receivers @ Low Operating Current @ Driver Output Voltage -- +25V @ Receiver Input Voltage -~ +27V @ Cutput Impedance at Power-off ( Driver ) - 300Q (Min ) @ Slew Rate ( Driver ) - 30V/us ( Max ) @ TIl-compatible Input ( Driver ) @ TTl-compatible Input/Output ( Receiver ) @ Hysteresis Input ( Receiver ) @ Noise Filter On-chip ( Receiver) @ Package Outline --- DIP/DMP 20 @ C-W0S Technology Mi BLOCK DIAGRAM (1) Driver Section ( {-circuit ) (2) Receiver Section ( 1-circuit ) SLEW RATE Rx Vee Vcc CONTROL Voo COMPARATOR [yojee Do FILTER OUTPUT DRIVER 5kQ Di Tx COMPARATOR OUTPUT DRIVER Lav New Japan Radio Co,Ltd. 9-1NuUe4o18 Mi TERMINAL DESCRIPTION NO. | SYMBOL FUNCTION NO. | SYMBOL FUNCTION { Dot Receiver Output 1 it Di2 Driver Input 2 2 Rxt Receiver Input 1 12 Tx2 Driver Output 2 3 Do2 Receiver Output 2 13 Di3 Driver Input 3 4 Rx2 Receiver Input 2 14 Tx3 Driver Output 3 5 Do3 Receiver Output 3 15 GND Ground 6 Rx3 Receiver Input 3 16 Do4 Receiver Output 4 7 Vp Dp iver Pogitl 8 412V) 17 Rx4 Receiver Input 4 Dil Driver Input 1 18 DoS Receiver Dutput 5 Tx1 Driver Output 1 19 Rx Receiver Input 5 0 | M_ | volthee Steely tayy | | Ye "Rb face Steels (+5) WB FUNCTIONAL DESCRIPTION (1) Driver Section The drivers output the RS-232C standrd signals which are converted from the TTL level signal to RS-2320 standard level by the level shifter and limit the slew rate below 30V/us(6V/us typ), to the RS-232C lines. The each driver incorporate series resistance to keep the output impedance to 300Q or more duaring the power-off. This series resistance also protect the internal circuits against the overvoltage of +25V impressed from outside. (2) Receiver Section The inputs of each receiver incorporate the resister(TYP:5kQ) as the drivers load. This resis- ter also protect the internal circuits against the overvoltage of +27V. The receiver accept the both of -+3V of RS-232C standard minimum requirement level and TTL level as the threshold voltage of input comparaters are adjusted for both input levels. The noise less than 1p-p and spike noise below 3us pulse width are eliminated by the hystere- sis circuits and noise filter. The output signals are TTL compatible and capable of 8-LSTTL driving. 9-2 New Japan Radio Co, Ltd.NuUe4018 MM ABSOLUTE WAX!MUM RATINGS (Ta=25C) PARAMETER SYMBOL RATINGS UNIT V Supply Vol tage Vop Ve, ~ ~ HH (Notel) |v Vee Qj ~ Receiver Input Voltage Vat +27 V Output Vol tage Vbo 0.3 ~ Vect0.3 put Voltage V ~0.3 ~ Voct0.3 V Driver jneut otk Vol tage Vix Totes V Output Current lox +60 mA Power Dissipation Pp DIP 500 mn Operating Temperature Topr - 20 ~ + 75 c Storage Temperature Tstg - 65 ~ + 150 c Notel) The Vo Jeve! must be maintained higher than Vcc level. If the Vcc rise up before Vso supply when the power is turned on, the latch-up may occer because of the reverse current flows from Vcc to Vpp. If there are possibilities of early Vcc supply, the diode connect to Voo and Vss terminals shown in application circuits are required. WE ELECTRICAL CHARACTERISTICS (Ta=25C) PARAMETER SYMBOL CONDITIONS MIN TYP | MAX [UNIT lee Vec=5.5V | Quiescent Current lop Von=12V 1 mA Iss Vss=~-12V 1 Vec 4.5 5.5 Operating Vol tage Vop 4.5 12 V ss -12 -4.5 MH DRIVER ELECTRICAL CHARACTERISTICS (Ta=25C, 4.55Vcc885.5V, Voo=4.5~12V, Vss=-4.5V-~-12V, GND=OV) PARAWETER SYMBOL CONDITIONS MIN J TYP [| MAX = TUNIT Input Voltage H Level Via 2.0 V L Leve! Vin 0.8 Maximum Input Current froylrx |) Viw=GND or Von -10 +10 Tawa Vin=Viv | Von=+4.5V,Vec=-4.5V 3.0 H Level Output Vol tage Vou Ri=3kQ | Voo=#9V, Ves=-9V 6.5 V Von=+12V, Ves=-12V 9.0 VineVin | Voo=t4.5V, Vss=-4.5V -3.0 L Level Output Vol tage Vou Ri=3kQ | Von=t9V, Vss=-9V -6.5 V Vop=t12V,Vss=-12V 9.0 los* Vout=GND, Von=+12V VineVin +45 Output Short Current mA (Note 2) los Vss=-12V VineVig -45 Output Impedance Rout Voc2Vpp=Vss20V, -2VSVourSet2V | 300 Q Note 2) The output short current is specified by 1 output terminal. lf plural outputs short at once, the NJU6401B may destroy due to the power over the package power dissipation. New Japan Radio Co, Ld. 9.3NJIUG4018B Mi DRIVER AC CHARACTERISTICS (Ta=25C, 4.58Vccua5.5V, Vov=4.5~12V, Vss=-4.5V-~-12V, GND=OV, Ri=3kQ, Cu=50pF) (Note 3,4) PARAMETER SYMBOL CONDITIONS MIN [TYP 7 MAX UNIT Propagation . Von=+4. aM Veo 5V 6.0 Delay Time fee | Weert, iesectav ab 4s Provatst leh say Tine | teas | Yee Mianetay BS us Von=+12V, Vss=-12V 4.0 Rise/Fall Time (Note 5) tr/te 0.2 us Delay Time Skew ter Vov=+12V, Vss=-12V 400 ns Slew Rate (Note 5) Sr Ri=3 to 7kQ, 15pF SC. S2.5nF 6 30 | v/ us Note 3) AC input waveform: t:=trS@20ns, Vin=2.0V, Vii=0.8V Note 4) Input Rise/Fall time are less than 5s. Note 5) Output slew rate, output rise time and fall time are specified output waveform changing time either from +3V to -3V or -3V to +3V. Wi RECEIVER ELECTRICAL CHARACTERISTICS (Ta=25C, 4.555VecSS5.5V, Voo=4.5~12V, Vss=-4.5V-~-12V, GND=0V) PARAMETER SYMBOL CONDITIONS MIN [TYP | MAX | UNIT Input Voltage H Level Vp 1.3 92.0 | 2.5 V L Level Vw 0.5 $1.0 7 1.7 Hysteresis Voltage Vu 1.0 V Input Impedance Rin VinebkoV~ei2V 3 5 7 kQ Datout Woltawe Trev! | Voc _| VieVnthac)s loorsedcaan | 2 os | Wi RECEIVER AC CHARACTERISTICS (Ta=25C, 4.5SVccRS5.5V, Voo=4.5~12V, Vss=-4.5V~-12V, GND=OV, CL=50pF) (Note 6) PARAMETER SYMBOL CONDITIONS MIN | TYP | MAX | UNIT Propagation Delay Time teLa, tex. | Input Pulse Widthe10 us 6.5 Jus Delay Time Skew tsx 400 ns Output Rise Time tr 300 ns Output Fall Time te 300 ns Note 6) AC input waveform tr=tf=200ns, Vin=+3V, Vii=-3V, f=20kHz. 9-4 New Japan Radio Co, Ltd.i MEASUREMENT CIRCUITS NJIUG4018B (1) Driver AC Characteristics (2) Receiver AC Characteristics Vour Vix Vout RECEIVER Wl MEASUREMENT WAVEFORMS (1) Driver AC Characteristics (2) Receiver AC Characteristics New Japan Radio Co,Ltd. 9.5WB APPLICATION CIRCUIT NIJIUG6G4018B +5V +12V (~ 27, 28,1,2,5,6,7,8, 8 RS-232C PORT Vec Voo 8251A NJU6401B ZU RESET p0-b7 12 op tp [9 81 Di! >. Txi| 9 2 TxD Wag pre u| Diz Pe Tr2 [12 20 O DTR 13 5 Ris f23 13] Dia {>o Tx3 [14 4 CQ RTS TO/FROM / tl agg par 22 1] Dol o<f Rxl| 2 6 DSR 3] Do2 Rx2] 4 3 One Ke RxD 5] Do3 o<<] Rx3] 6 5 & cTs 16 Pek gf Et 17 B DCD 18] DoS o<] Rx5 J 19 22 C) RI GND Vss * XN 12V RS-232C port * External diode for protective use. Protection of in case +5V voltage supplied before than +12V and overvoltage stress. 9-6 New Japan Radio Co.thd.