AVAILABLE
EVALUATION KIT AVAILABLE
Functional Diagrams
Pin Configurations appear at end of data sheet.
Functional Diagrams continued at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
General Description
The MAX3080–MAX3089 high-speed transceivers for
RS-485/RS-422 communication contain one driver and
one receiver. These devices feature fail-safe circuitry,
which guarantees a logic-high receiver output when the
receiver inputs are open or shorted. This means that
the receiver output will be a logic high if all transmitters
on a terminated bus are disabled (high impedance).
The MAX3080/MAX3081/MAX3082 feature reduced
slew-rate drivers that minimize EMI and reduce reflec-
tions caused by improperly terminated cables, allowing
error-free data transmission up to 115kbps. The
MAX3083/MAX3084/MAX3085 offer higher driver out-
put slew-rate limits, allowing transmit speeds up to
500kbps. The MAX3086/MAX3087/MAX3088’s driver
slew rates are not limited, making transmit speeds up
to 10Mbps possible. The MAX3089’s slew rate is
selectable between 115kbps, 500kbps, and 10Mbps
by driving a selector pin with a single three-state driver.
These transceivers typically draw 375µA of supply
current when unloaded, or when fully loaded with the
drivers disabled.
All devices have a 1/8-unit-load receiver input imped-
ance that allows up to 256 transceivers on the bus. The
MAX3082/MAX3085/MAX3088 are intended for half-
duplex communications, while the MAX3080/MAX3081/
MAX3083/MAX3084/MAX3086/MAX3087 are intended
for full-duplex communications. The MAX3089 is selec-
table between half-duplex and full-duplex operation. It
also features independently programmable receiver
and transmitter output phase via separate pins.
Next Generation Device Features
♦For Fault-Tolerant Applications:
MAX3430: ±80V Fault-Protected, Fail-Safe, 1/4-
Unit Load, +3.3V RS-485 Transceiver
♦For Low-Voltage Applications:
MAX3362: +3.3V, High-Speed, RS-485/RS-422
Transceiver in a SOT23 Package
♦For Multiple Transceiver Applications:
MAX3030E–MAX3033E: ±15kV ESD-Protected,
+3.3V, Quad, RS-422 Transmitters
MAX3040–MAX3045: ±10kV ESD-Protected, Quad,
+5V, RS-485/RS-422 Transmitters
Applications
RS-422/RS-485 Communications
Level Translators
Transceivers for EMI-Sensitive Applications
Industrial-Control Local Area Networks
Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
19-1138; Rev 3; 12/05
Selection Table
*Pin-compatible with 75180, with additional features implemented using pins 1, 6, 8, and 13.
Ordering Information continued at end of data sheet.
Ordering Information
PART
MAX3080CSD
MAX3080CPD
MAX3080ESD -40°C to +85°C
0°C to +70°C
0°C to +70°C
TEMP RANGE PIN-PACKAGE
14 SO
14 Plastic DIP
14 SO
MAX3080EPD -40°C to +85°C 14 Plastic DIP
Part
Half/Full
Duplex
Data
Rate
(Mbps)
Slew
Rate
Limited
Low-
Power
Shutdown
Receiver/
Driver
Enable
Quiescent
Current
(µA)
Transceivers
On
Bus
Pin
Count
Industry-
Standard
Pinout
MAX3080
Full 0.115 Yes Yes Yes 375 256 14 75180
MAX3081
Full 0.115 Yes No No 375 256 8 75179
MAX3082
Half 0.115 Yes Yes Yes 375 256 8 75176
MAX3083
Full 0.5 Yes Yes Yes 375 256 14 75180
MAX3084
Full 0.5 Yes No No 375 256 8 75179
MAX3085
Half 0.5 Yes Yes Yes 375 256 8 75176
MAX3086
Full 10 No Yes Yes 375 256 14 75180
MAX3087
Full 10 No No No 375 256 8 75179
MAX3088
Half 10 No Yes Yes 375 256 8 75176
MAX3089
Selectable Selectable Selectable
Yes Yes 375 256 14 75180*
Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(VCC = +5V ±5%, TA= TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA= +25°C.) (Note 1)
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.
Supply Voltage (VCC) ............................................................+7V
Control Input Voltage (RE, DE)...................-0.3V to (VCC + 0.3V)
Special Input Voltage
(H/F, SRL, TXP, RXP)..................................-0.3V to (VCC + 0.3V)
Driver Input Voltage (DI).............................-0.3V to (VCC + 0.3V)
Driver Output Voltage (A, B, Y, Z)........................................±13V
Receiver Input Voltage (A, B) ..............................................±13V
Receiver Input Voltage, Full Duplex (A, B) ..........................±25V
Receiver Output Voltage (RO)....................-0.3V to (VCC + 0.3V)
Continuous Power Dissipation
8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) ...727mW
8-Pin SO (derate 5.88mW/°C above +70°C)................471mW
14-Pin Plastic DIP (derate 10.0mW/°C above +70°C) ....800mW
14-Pin SO (derate 8.33mW/°C above +70°C)..............667mW
Operating Temperature Ranges
MAX308_C_ _ .....................................................0°C to +70°C
MAX308_E_ _...................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Figure 5, R = 50Ω(RS-422)
DE = GND,
VCC = GND or 5.25V
DE = GND,
VCC = GND or 5.25V
H/F, TXP, RXP, internal pulldown
DE, DI, RE
SRL = VCC
SRL
MAX3080–MAX3085, and MAX3089 with
SRL = VCC or unconnected
DE, DI, RE, H/F, TXP, RXP
Figure 5, R = 50Ωor R = 27Ω
Figure 5, R = 50Ωor R = 27Ω
Figure 5, R = 50Ωor R = 27Ω
SRL (Note 3)
DE, DI, RE, H/F, TXP, RXP
SRL
CONDITIONS
µA
125
IO
Output Leakage (Y and Z)
Full Duplex
µA
125
IIN4
Input Current (A and B)
Full Duplex
µA
75
IIN3
SRL Input Current
V0.8VIL2
Input Low Voltage
V0.4VCC 0.6VCC
VIM2
Input Middle Voltage
VVCC - 0.8VIH2
Input High Voltage
V
2.0
VOD2
Differential Driver Output
10 40IIN2
µA
±2IIN1
SRL Input Current
mV100VHYS
DI Input Hysteresis
V0.8VIL1
Input Low Voltage
V0.2∆VOD
Change in Magnitude of
Differential Output Voltage
(Note 2)
V3VOC
Driver Common-Mode Output
Voltage
V0.2∆VOC
Change In Magnitude of
Common-Mode Voltage (Note 2)
V2.0VIH1
Input High Voltage
UNITSMIN TYP MAXSYMBOLPARAMETER
Figure 5, R = 27Ω(RS-485) 1.5
SRL = GND (Note 3) -75
VIN = 12V
VIN = 12V
VIN = -7V -100
-75VIN = -7V
Figure 5 V5VOD1
Differential Driver Output
(no load)
mAVOD1
Driver Short-Circuit Output
Current (Note 4)
DRIVER
-7V ≤VOUT ≤VCC -250
0V ≤VOUT ≤12V
0V ≤VOUT ≤VCC ±25
250
MAX3080–MAX3089
2
Maxim Integrated
Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
DC ELECTRICAL CHARACTERISTICS (continued)
(VCC = +5V ±5%, TA= TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA= +25°C.) (Note 1)
0V ≤VRO ≤VCC
-7V ≤VCM ≤+12V
0.4V ≤VO≤2.4V
-7V ≤VCM ≤+12V
IO= -4mA, VID = -50mV
DE = GND, VRE = VCC
IO= 4mA, VID = -200mV
No load,
RE = DI = GND
or VCC, SRL = VCC
CONDITIONS
µA0.001 10ISHDN
Supply Current in Shutdown
Mode
µA
ICC
Supply Current
mA±7 ±95IOSR
Receiver Output Short-Circuit
Current
kΩ96RIN
Receiver Input Resistance
µA±1IOZR
Three-State Output Current at
Receiver
mV-200 -125 -50VTH
Receiver Differential Threshold
Voltage
mV25∆VTH
Receiver Input Hysteresis
VVCC -1.5VOH
Receiver Output High Voltage
V0.4VOL
Receiver Output Low Voltage
UNITSMIN TYP MAXSYMBOLPARAMETER
No load,
RE = DI = GND
or VCC, SRL = GND
DE = VCC
DE = VCC
420 800
µA
475 1000
DE = GND
DE = GND
430 900
375 600
Note 1: All currents into the device are positive; all currents out of the device are negative. All voltages are referred to device
ground unless otherwise noted.
Note 2: ∆VOD and ∆VOC are the changes in VOD and VOC, respectively, when the DI input changes state.
Note 3: The SRL pin is internally biased to VCC / 2 by a 100kΩ/100kΩresistor divider. It is guaranteed to be VCC / 2 if left
unconnected.
Note 4: Maximum current level applies to peak current just prior to foldback-current limiting; minimum current level applies during
current limiting.
RECEIVER
SUPPLY CURRENT
SUPPLY CURRENT
Maxim Integrated
3
Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
SWITCHING CHARACTERISTICS—MAX3080–MAX3082, and MAX3089 with
SRL = Unconnected
(VCC = +5V ±5%, TA= TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA= +25°C.)
Figures 7 and 9, RDIFF = 54Ω,
CL1 = CL2 = 100pF
Figures 7 and 9, RDIFF = 54Ω,
CL1 = CL2 = 100pF
Figures 6 and 12, CL= 100pF, S1 closed
Figures 7 and 9, RDIFF = 54Ω,
CL1 = CL2 = 100pF
Figures 6 and 12, CL= 100pF, S2 closed
Figures 8 and 10, CL= 15pF, S1 closed
Figures 8 and 10, CL= 15pF, S2 closed
Figures 6 and 12, CL= 100pF, S1 closed
Figures 11 and 13; |VID |≥2.0V;
rise and fall time of VID ≤15ns
(Note 5)
Figures 6 and 12, CL= 100pF, S2 closed
Figures 11 and 13; |VID |≥2.0V;
rise and fall time of VID ≤15ns
Figures 8 and 10, CL= 15pF, S2 closed
Figures 8 and 10, CL= 100pF, S2 closed
Figures 8 and 10, CL= 100pF, S1 closed
Figures 6 and 12, CL= 100pF, S1 closed
Figures 8 and 10, CL= 15pF, S1 closed
Figures 6 and 12, CL= 100pF, S2 closed
CONDITIONS
ns3500tRZL(SHDN)
Receiver Enable from Shutdown
to Output Low
ns3500tRZH(SHDN)
Receiver Enable from Shutdown
to Output High
ns6000tDZL(SHDN)
Driver Enable from Shutdown to
Output Low
ns6000tDZH(SHDN)
Driver Enable from Shutdown to
Output High
ns50 200 600tSHDN
Time to Shutdown
ns20 50tRHZ
Receiver Disable Time from
High
ns20 50tRLZ
Receiver Disable Time from Low
ns20 50tRZH
Receiver Enable to Output High
ns667 1320 2500tDR, tDF
Driver Rise or Fall Time
ns-3 ±200tDSKEW
ns
500 2030 2600tDPLH
Driver Input to Output
Driver Output Skew
|tDPLH - tDPHL |
ns20 50tRZL
Receiver Enable to Output Low
ns3±30tRSKD
|tRPLH - tRPHL |Differential
Receiver Skew
ns127 200
tRPLH,
tRPHL
Receiver Input to Output
ns100tDHZ
Driver Disable Time from High
kbps115fMAX
Maximum Data Rate
ns3500tDZH
Driver Enable to Output High
ns3500tDZL
Driver Enable to Output Low
ns100tDLZ
Driver Disable Time from Low
UNITSMIN TYP MAXSYMBOLPARAMETER
tDPHL 500 2030 2600
MAX3080–MAX3089
4
Maxim Integrated
Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
SWITCHING CHARACTERISTICS—MAX3083–MAX3085, and MAX3089 with SRL = VCC
(VCC = +5V ±5%, TA= TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA= +25°C.)
Figures 7 and 9, RDIFF = 54Ω,
CL1 = CL2 = 100pF
Figures 7 and 9, RDIFF = 54Ω,
CL1 = CL2 = 100pF
Figures 7 and 9, RDIFF = 54Ω,
CL1 = CL2 = 100pF
Figures 6 and 12, CL= 100pF, S2 closed
Figures 8 and 10, CL= 15pF, S1 closed
Figures 8 and 10, CL= 15pF, S2 closed
Figures 6 and 12, CL= 100pF, S1 closed
Figures 11 and 13; |VID |≥2.0V;
rise and fall time of VID ≤15ns
(Note 5)
Figures 6 and 12, CL= 100pF, S2 closed
Figures 11 and 13; |VID |≥2.0V;
rise and fall time of VID ≤15ns
Figures 8 and 10, CL= 15pF, S2 closed
Figures 8 and 10, CL= 100pF, S2 closed
Figures 8 and 10, CL= 100pF, S1 closed
Figures 6 and 12, CL= 100pF, S1 closed
Figures 8 and 10, CL= 15pF, S1 closed
Figures 6 and 12, CL= 100pF, S2 closed
CONDITIONS
ns3500tRZH(SHDN)
Receiver Enable from Shutdown
to Output High
ns4500tDZL(SHDN)
Driver Enable from Shutdown to
Output Low
ns4500tDZH(SHDN)
Driver Enable from Shutdown to
Output High
ns50 200 600tSHDN
Time to Shutdown
ns20 50tRHZ
Receiver Disable Time from
High
ns20 50tRLZ
Receiver Disable Time from Low
ns20 50tRZH
Receiver Enable to Output High
ns200 530 750tDR, tDF
Driver Rise or Fall Time
ns-3 ±100tDSKEW
ns
250 720 1000tDPLH
Driver Input to Output
Driver Output Skew
|tDPLH - tDPHL |
ns20 50tRZL
Receiver Enable to Output Low
ns3±30tRSKD
|tRPLH - tRPHL |Differential
Receiver Skew
ns127 200
tRPLH,
tRPHL
Receiver Input to Output
ns100tDHZ
Driver Disable Time from High
kbps500fMAX
Maximum Data Rate
ns2500tDZH
Driver Enable to Output High
ns2500tDZL
Driver Enable to Output Low
ns100tDLZ
Driver Disable Time from Low
UNITSMIN TYP MAXSYMBOLPARAMETER
tDPHL
Figures 6 and 12, CL= 100pF, S1 closed ns3500tRZL(SHDN)
Receiver Enable from Shutdown
to Output Low
250 720 1000
Maxim Integrated
5
Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
SWITCHING CHARACTERISTICS—MAX3086–MAX3088, and MAX3089 with SRL = GND
(VCC = +5V ±5%, TA= TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA= +25°C.)
tDPHL
Figures 6 and 12, CL= 100pF, S1 closed ns
Figures 7 and 9, RDIFF = 54Ω,
CL1 = CL2 = 100pF
3500tRZL(SHDN)
Figures 7 and 9, RDIFF = 54Ω,
CL1 = CL2 = 100pF
Receiver Enable from Shutdown
to Output Low
Figures 7 and 9, RDIFF = 54Ω,
CL1 = CL2 = 100pF
Figures 6 and 12, CL= 100pF, S2 closed
Figures 8 and 10, CL= 15pF, S1 closed
Figures 8 and 10, CL= 15pF, S2 closed
Figures 6 and 12, CL= 100pF, S1 closed
Figures 11 and 13; |VID |≥2.0V;
rise and fall time of VID ≤15ns
(Note 5)
Figures 6 and 12, CL= 100pF, S2 closed
Figures 11 and 13; |VID |≥2.0V;
rise and fall time of VID ≤15ns
Figures 8 and 10, CL= 15pF, S2 closed
Figures 8 and 10, CL= 100pF, S2 closed
Figures 8 and 10, CL= 100pF, S1 closed
Figures 6 and 12, CL= 100pF, S1 closed
Figures 8 and 10, CL= 15pF, S1 closed
Figures 6 and 12, CL= 100pF, S2 closed
CONDITIONS
34 60
ns3500tRZH(SHDN)
Receiver Enable from Shutdown
to Output High
ns250tDZL(SHDN)
Driver Enable from Shutdown to
Output Low
ns250tDZH(SHDN)
Driver Enable from Shutdown to
Output High
ns50 200 600tSHDN
Time to Shutdown
ns20 50tRHZ
Receiver Disable Time from
High
ns20 50tRLZ
Receiver Disable Time from Low
ns20 50tRZH
Receiver Enable to Output High
ns14 25tDR, tDF
Driver Rise or Fall Time
ns-2.5 ±10tDSKEW
ns
34 60tDPLH
Driver Input to Output
Driver Output Skew
|tDPLH - tDPHL |
ns20 50tRZL
Receiver Enable to Output Low
ns0±10tRSKD
|tRPLH - tRPHL |Differential
Receiver Skew
ns106 150
tRPLH,
tRPHL
Receiver Input to Output
ns100tDHZ
Driver Disable Time from High
Mbps10fMAX
Maximum Data Rate
ns150tDZH
Driver Enable to Output High
ns150tDZL
Driver Enable to Output Low
ns100tDLZ
Driver Disable Time from Low
UNITSMIN TYP MAXSYMBOLPARAMETER
Note 5: The device is put into shutdown by bringing RE high and DE low. If the enable inputs are in this state for less than 50ns, the
device is guaranteed not to enter shutdown. If the enable inputs are in this state for at least 600ns, the device is guaranteed
to have entered shutdown.
MAX3080–MAX3089
6
Maxim Integrated
Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
300
-60 100
NO-LOAD SUPPLY CURRENT
vs. TEMPERATURE
350
325
525
MAX3080/3089 TOC-16
TEMPERATURE (°C)
NO-LOAD SUPPLY CURRENT (µA)
40
450
425
375
400
060
500
475
-40 -20 20 80
A: MAX3086–MAX3088,
MAX3089 WITH
SRL = GND
B: MAX3080–MAX3085,
MAX3089 WITH
SRL = OPEN OR VCC
A
A
B
DE = VCC
DE = GND
B
0
10
05
OUTPUT CURRENT
vs. RECEIVER OUTPUT LOW VOLTAGE
20
60
MAX3080/3089 TOC-2
OUTPUT LOW VOLTAGE (V)
OUTPUT CURRENT (mA)
3
40
30
2
50
14
0
5
05
OUTPUT CURRENT
vs. RECEIVER OUTPUT HIGH VOLTAGE
10
30
MAX3080/3089 TOC-3
OUTPUT HIGH VOLTAGE (V)
OUTPUT CURRENT (mA)
3
20
15
2
25
14
0
2
-60 100
SHUTDOWN CURRENT
vs. TEMPERATURE
4
6
20
MAX3080/3089 TOC-1
TEMPERATURE (°C)
SHUTDOWN CURRENT (nA)
40
12
14
10
8
060
16
18
-40 -20 20 80
0.10
0.15
-60 80 100
RECEIVER OUTPUT LOW VOLTAGE
vs. TEMPERATURE
0.20
0.50
MAX3080/3089 TOC-5
TEMPERATURE (°C)
OUTPUT LOW VOLTAGE (V)
20
0.40
0.35
0.30
0.25
040
0.45
-40 -20 60
IRO = 8mA
3.8
3.9
-60 80 100
RECEIVER OUTPUT HIGH VOLTAGE
vs. TEMPERATURE
4.0
4.5
MAX3080/3089 TOC-4
TEMPERATURE (°C)
OUTPUT VOLTAGE (V)
20
4.3
4.2
4.1
040
4.4
-40 -20 60
IRO = 8mA
115
-60 100
RECEIVER PROPAGATION DELAY
(500kbps MODE) vs. TEMPERATURE
120
140
MAX3080/3089 TOC-7
TEMPERATURE (°C)
PROPAGATION DELAY (ns)
40
130
125
060
135
-40 -20 20 80
CLOAD = 100pF
94
-60 100
RECEIVER PROPAGATION DELAY
(10Mbps MODE) vs. TEMPERATURE
98
96
112
MAX3080/3089 TOC-8
TEMPERATURE (°C)
PROPAGATION DELAY (ns)
40
106
104
100
102
060
110
108
-40 -20 20 80
CLOAD = 100pF
1.90
-60 100
DRIVER PROPAGATION DELAY
(115kbps MODE) vs. TEMPERATURE
1.95
2.20
MAX3080/3089 TOC-9
TEMPERATURE (°C)
PROPAGATION DELAY (ms)
40
2.10
2.00
2.05
060
2.15
-40 -20 20 80
Rt = 54Ω
Typical Operating Characteristics
(VCC = +5V, TA = +25°C, unless otherwise noted.)
Maxim Integrated
7
Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
Typical Operating Characteristics (continued)
(VCC = +5V, TA = +25°C, unless otherwise noted.)
520
560
-60 100
DRIVER PROPAGATION DELAY
(500kbps MODE) vs. TEMPERATURE
600
640
920
MAX3080/3089 TOC-10
TEMPERATURE (°C)
PROPAGATION DELAY (ns)
40
760
800
720
680
060
840
880
-40 -20 20 80
Rt = 54Ω
20
25
-60 100
DRIVER PROPAGATION DELAY
(10Mbps MODE) vs. TEMPERATURE
30
60
MAX3080/3089 TOC-11
TEMPERATURE (°C)
PROPAGATION DELAY (ns)
40
45
50
40
35
060
55
-40 -20 20 80
Rt = 54Ω
1.83
1.84
-60 100
DRIVER DIFFERENTIAL OUTPUT VOLTAGE
vs. TEMPERATURE
1.85
1.90
MAX3080/3089 TOC-13
TEMPERATURE (°C)
OUTPUT VOLTAGE (V)
40
1.88
1.87
1.86
060
1.89
-40 -20 20 80
Rt = 54Ω
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-8 -2
OUTPUT CURRENT vs.
DRIVER OUTPUT HIGH VOLTAGE
MAX3080/3089 TOC-27
OUTPUT HIGH VOLTAGE (V)
OUTPUT CURRENT (mA)
642-6 -4 0
100
0.01
01
DRIVER OUTPUT CURRENT
vs. DIFFERENTIAL OUTPUT VOLTAGE
0.1
10
1
MAX3080 TOC-12
DIFFERENTIAL OUTPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
234 5
0
20
40
60
80
100
120
140
OUTPUT CURRENT vs.
DRIVER OUTPUT LOW VOLTAGE
MAX3080-25
OUTPUT LOW VOLTAGE (V)
OUTPUT CURRENT (mA)
024681012
MAX3080–MAX3089
8
Maxim Integrated
Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
2µs/div
DRIVER PROPAGATION DELAY
MAX3080/MAX3081/MAX3082, AND MAX3089
WITH SRL = OPEN
DI
VY - VZ
5V/div
2.5V/div
MAX3080/3089 TYP-20
500ns/div
DRIVER PROPAGATION DELAY
MAX3083/MAX3084/MAX3085, AND MAX3089
WITH SRL = VCC
DI
VY - VZ
5V/div
2.5V/div
MAX3080/3089 TYP-21
50ns/div
DRIVER PROPAGATION DELAY
MAX3086/MAX3087/MAX3088, AND MAX3089
WITH SRL = GND
DI
VY - VZ
5V/div
2.5V/div
MAX3080/3089 TYP-22
Typical Operating Characteristics (continued)
(VCC = +5V, TA = +25°C, unless otherwise noted.)
50ns/div
VA - VB
RO
2V/div
5V/div
MAX3080/3089 TYP-18
RECEIVER PROPAGATION DELAY
MAX3086–MAX3088, AND MAX3089
WITH SRL = GND
50ns/div
VA - VB
RO
2V/div
5V/div
MAX3080/3089 TYP-17
RECEIVER PROPAGATION DELAY
MAX3080–MAX3085, AND MAX3089
WITH SRL = OPEN OR VCC
Maxim Integrated
9
Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
Pin Description
PIN
—95 — Noninverting Driver OutputY9
5
6
7
5
6
7
3
—
4
4
—
5
Driver Input. With DE high, a low on DI forces noninverting
output low and inverting output high. Similarly, a high on DI
forces noninverting output high and inverting output low.
DI5
Slew-Rate-Limit Selector Pin. Connect SRL to GND for 10Mbps
communication rate; connect to VCC for 500kbps communication
rate. Leave unconnected for 115kbps communication rate.
SRL—
GroundGND6, 7
88— — TXP—
44— 3
Driver Output Enable. Drive DE high to enable driver outputs. These
outputs are high impedance when DE is low. Drive RE high and DE
low to enter low-power shutdown mode.
DE4
2
3
HALF-
DUPLEX
MODE
1
MAX3089
2
3
FULL-
DUPLEX
MODE
1
2
—
FULL-DUPLEX
DEVICES
—
MAX3081
MAX3084
MAX3087
1
2
HALF-
DUPLEX
DEVICES
—
MAX3082
MAX3085
MAX3088
Receiver Output. When RE is low and if A - B ≥-50mV, RO will be
high; if A - B ≤-200mV, RO will be low.
RO2
Receiver Output Enable. Drive RE low to enable RO; RO is high
impedance when RE is high. Drive RE high and DE low to enter
low-power shutdown mode.
RE
3
FUNCTIONNAME
Half/Full-Duplex Selector Pin. Connect H/Fto VCC for half-duplex
mode; connect to GND or leave unconnected for full-duplex mode.
H/F
—
MAX3080
MAX3083
MAX3086
Transmitter Phase. Connect TXP to GND, or leave floating for normal
transmitter phase/polarity. Connect to VCC to invert the transmitter
phase/polarity.
— — — — 9 Y Noninverting Receiver Input and Noninverting Driver Output*
10 6 — 10 — Z Inverting Driver Output
— — — — 10 ZInverting Receiver Input and Inverting Driver Output*
11 7 — 11 — B Inverting Receiver Input
— — — — 11 BReceiver Input Resistors*
— — 7 — — B Inverting Receiver Input and Inverting Driver Output
PIN
MAX3080–MAX3089
10
Maxim Integrated
Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
Pin Description (continued)
12 8 — 12 — A Noninverting Receiver Input
— — — — 12 A
HALF-
DUPLEX
MODE
MAX3089
FULL-
DUPLEX
MODE
FULL-DUPLEX
DEVICES
MAX3081
MAX3084
MAX3087
HALF-
DUPLEX
DEVICES
MAX3082
MAX3085
MAX3088 FUNCTIONNAME
MAX3080
MAX3083
MAX3086
Receiver Input Resistors*
— — 6 — — A Noninverting Receiver Input and Noninverting Driver Output
— — — 13 13 RXP
Receiver Phase. Connect RXP to GND, or leave unconnected for
normal transmitter phase/polarity. Connect to VCC to invert the
receiver phase/polarity.
14 1 8 14 14 VCC Positive Supply; 4.75V ≤VCC ≤5.25V
1, 8, 13 — — — — N.C. Not Connected. Not internally connected.
Function Tables
TRANSMITTING
INPUTS OUTPUTS
RE DE DI Z Y
X 1 1 0 1
X 1 0 1 0
0 0 X High-Z High-Z
1 0 X Shutdown
RECEIVING
INPUTS OUTPUT
RE DE A-B RO
0 X ≥-0.05V 1
0 X ≤-0.2V 0
0 X Open/shorted 1
1 1 X High-Z
1 0 X Shutdown
TRANSMITTING
INPUT OUTPUTS
DI Z Y
1 0 1
0 1 0
RECEIVING
INPUTS OUTPUT
A-B RO
≥-0.05V 1
≤-0.2V 0
Open/shorted 1
PIN
X = Don’t care
Shutdown mode, driver and receiver outputs high impedance
*(MAX3089 only.) In half-duplex mode, the driver outputs serve as receiver inputs. The full-duplex receiver inputs (A and B) will still
have a 1/8-unit load, but are not connected to the receiver.
MAX3081/MAX3084/MAX3087MAX3080/MAX3083/MAX3086
Maxim Integrated
11
Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
Function Tables (continued)
TRANSMITTING
INPUTS OUTPUTS
RE DE DI B/Z A/Y
X 1 1 0 1
X 1 0 1 0
0 0 X High-Z High-Z
1 0 X Shutdown
RECEIVING
INPUTS OUTPUT
RE DE A-B RO
0 X ≥-0.05V 1
0 X ≤-0.2V 0
0 X Open/shorted 1
1 1 X High-Z
1 0 X Shutdown
MAX3089
TRANSMITTING
INPUTS OUTPUTS
TXP RE DE DI Z Y
0 X 1 1 0 1
0 X 1 0 1 0
1 X 1 1 1 0
1 X 1 0 0 1
X 0 0 X High-Z High-Z
X 1 0 X Shutdown
INPUTS OUTPUT
H/FRXP RE DE A-B Y-Z RO
0 0 0 X ≥-0.05V X 1
0 0 0 X ≤-0.2V X 0
0 1 0 X ≥-0.05V X 0
0 1 0 X ≤-0.2V X 1
1 0 0 0 X ≥-0.05V 1
1 0 0 0 X ≤-0.2V 0
1 1 0 0 X ≥-0.05V 0
1 1 0 0 X ≤-0.2V 1
0 0 0 X Open/
shorted X 1
1 0 0 0 X Open/
shorted 1
0 1 0 X Open/
shorted X 0
1 1 0 0 X Open/
shorted 0
X X 1 1 X X High-Z
X X 1 0 X X Shutdown
RECEIVING
MAX3082/MAX3085/MAX3088
MAX3080–MAX3089
12
Maxim Integrated
Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
MAX3081
MAX3084
MAX3087
TOP VIEW
1
2
3
4
RO
DI
GND
8
7
6
5
A
B
Z
Y
VCC
DIP/SO
R
D
Rt
Rt
VCC
5
6
7
8
RO
DI
GND
4GND
DI
RO
3
2
A
B
Y
Z
VCC
DR
RD
1
0.1µF
Figure 2. MAX3081/MAX3084/MAX3087 Pin Configuration and Typical Full-Duplex Operating Circuit
MAX3080
MAX3083
MAX3086
DIP/SO
TOP VIEW
Rt
Rt
DE VCC
RE
GND
VCC RE
GND DE
RO
DI
9
10
12
11
B
A
Z
Y
0.1µF
5
RO
NC
DI
2
1, 8, 13
3 6, 7
144
1
2
3
4
5
6
7
14
13
12
11
10
9
8
VCC
N.C.
N.C.
A
B
Z
Y
N.C.
RO
RE
DE
DI
GND
GND
R
D
D
RD
R
Figure 1. MAX3080/MAX3083/MAX3086 Pin Configuration and Typical Full-Duplex Operating Circuit
MAX3082
MAX3085
MAX3088
TOP VIEW
NOTE: PIN LABELS Y AND Z ON TIMING, TEST, AND WAVEFORM DIAGRAMS REFER TO PINS A AND B WHEN DE IS HIGH.
1
2
3
4
8
5
VCC
0.1µF
GND
DI
DE
RE
RO R
D
Rt
Rt
7
6
D
R
DE
RE
DI
RO
A
B
1
2
3
4
8
7
6
5
VCC
B
A
GND
DI
DE
RE
RO
DIP/SO
R
D
B
A
Figure 3. MAX3082/MAX3085/MAX3088 Pin Configuration and Typical Half-Duplex Operating Circuit
TOP VIEW
TOP VIEW
TOP VIEW
Maxim Integrated
13
Detailed Description
The MAX3080–MAX3089 high-speed transceivers for
RS-485/RS-422 communication contain one driver and
one receiver. These devices feature fail-safe circuitry,
which guarantees a logic-high receiver output when the
receiver inputs are open or shorted, or when they are
connected to a terminated transmission line with all
drivers disabled (see Fail-Safe section). The MAX3080/
MAX3081/MAX3082 feature reduced slew-rate drivers
that minimize EMI and reduce reflections caused by
improperly terminated cables, allowing error-free data
transmission up to 115kbps (see Reduced EMI and
Reflections section). The MAX3083/MAX3084/MAX3085
offer higher driver output slew-rate limits, allowing
transmit speeds up to 500kbps. The MAX3086/
MAX3087/MAX3088’s driver slew rates are not limited,
making transmit speeds up to 10Mbps possible. The
MAX3089’s slew rate is selectable between 115kbps,
500kbps, and 10Mbps by driving a selector pin with a
three-state driver.
The MAX3082/MAX3085/MAX3088 are half-duplex
transceivers, while the MAX3080/MAX3081/MAX3083/
MAX3084/MAX3086/MAX3087 are full-duplex trans-
ceivers. The MAX3089 is selectable between half- and
full-duplex communication by driving a selector pin
high or low, respectively.
All of these parts operate from a single +5V supply.
Drivers are output short-circuit current limited. Thermal
shutdown circuitry protects drivers against excessive
power dissipation. When activated, the thermal shut-
down circuitry places the driver outputs into a high-
impedance state.
Receiver Input Filtering
The receivers of the MAX3080–MAX3085, and the
MAX3089 when operating in 115kbps or 500kbps
mode, incorporate input filtering in addition to input
hysteresis. This filtering enhances noise immunity with
differential signals that have very slow rise and fall
times. Receiver propagation delay increases by 20%
due to this filtering.
Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
DIP/SO
TOP VIEW
1
2
3
4
5
6
7
14
13
12
11
10
9
8
VCC
RXP
TXP
A
B
Z
Y
RO
RE
DE
DI
SRL
GND
H/F
MAX3089
RD
VCC
TXP
A
B
Z
Y
GND DE SRL
DI
MAX3089
H/F
RE
NOTE: SWITCH POSITIONS
INDICATED FOR H/F = GND
Figure 4. MAX3089 Pin Configuration and Functional Diagram
MAX3080–MAX3089
14
Maxim Integrated
Fail-Safe
The MAX3080 family guarantees a logic-high receiver
output when the receiver inputs are shorted or open, or
when they are connected to a terminated transmission
line with all drivers disabled. This is done by setting the
receiver threshold between -50mV and -200mV. If the
differential receiver input voltage (A-B) is greater than
or equal to -50mV, RO is logic high. If A-B is less than
or equal to -200mV, RO is logic low. In the case of a
terminated bus with all transmitters disabled, the
receiver’s differential input voltage is pulled to 0V by
the termination. With the receiver thresholds of the
MAX3080 family, this results in a logic high with a 50mV
minimum noise margin. Unlike previous fail-safe
devices, the -50mV to -200mV threshold complies with
the ±200mV EIA/TIA-485 standard.
MAX3089 Programming
The MAX3089 has several programmable operating
modes. Transmitter rise and fall times are programma-
ble between 2500ns, 750ns, and 25ns, resulting in
maximum data rates of 115kbps, 500kbps, and
10Mbps, respectively. To select the desired data rate,
drive SRL to one of three possible states by using a
three-state driver, by connecting it to VCC or GND, or
by leaving it unconnected. For 115kbps operation, set
the three-state device in high-impedance mode or
leave SRL unconnected. For 500kbps operation, drive
SRL high or connect it to VCC. For 10Mbps operation,
drive SRL low or connect it to GND. SRL can be
changed during operation without interrupting data
communications.
Occasionally, twisted-pair lines are connected back-
ward from normal orientation. The MAX3089 has two
pins that invert the phase of the driver and the receiver
to correct for this problem. For normal operation, drive
TXP and RXP low, connect them to ground, or leave
them unconnected (internal pulldown). To invert the dri-
ver phase, drive TXP high or connect it to VCC. To
invert the receiver phase, drive RXP high or connect it
to VCC. Note that the receiver threshold is positive
when RXP is high.
The MAX3089 can operate in full- or half-duplex mode.
Drive the H/Fpin low, leave it unconnected (internal
pulldown), or connect it to GND for full-duplex opera-
tion, and drive it high for half-duplex operation. In full-
duplex mode, the pin configuration of the driver and
receiver is the same as that of a MAX3080 (Figure 4). In
half-duplex mode, the receiver inputs are switched to
the driver outputs, connecting outputs Y and Z to inputs
A and B, respectively. In half-duplex mode, the internal
full-duplex receiver input resistors are still connected to
pins 11 and 12.
Applications Information
256 Transceivers on the Bus
The standard RS-485 receiver input impedance is 12kΩ
(one-unit load), and the standard driver can drive up to
32 unit loads. The MAX3080 family of transceivers have
a 1/8-unit-load receiver input impedance (96kΩ), allow-
ing up to 256 transceivers to be connected in parallel
on one communication line. Any combination of these
devices and/or other RS-485 transceivers with a total of
32 unit loads or less can be connected to the line.
Reduced EMI and Reflections
The MAX3080–MAX3085, and MAX3089 with SRL = VCC
or unconnected, are slew-rate limited, minimizing EMI
and reducing reflections caused by improperly termi-
nated cables. Figure 14 shows the driver output wave-
form and its Fourier analysis of a 20kHz signal
transmitted by a MAX3086/MAX3087/MAX3088, and
MAX3089 with SRL = GND. High-frequency harmonic
Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
R
R
Y
Z
VOD
VOC
Figure 5. Driver DC Test Load
RECEIVER
OUTPUT
TEST POINT
1kΩ
1kΩ
S1
S2
VCC
CRL
15pF
Figure 6. Receiver Enable/Disable Timing Test Load
Maxim Integrated
15
Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
DI
DE
3V
Y
Z
CL1
CL2
RDIFF
VID
OUTPUT
UNDER TEST
500ΩS1
S2
VCC
CL
Figure 7. Driver Timing Test Circuit Figure 8. Driver Enable/Disable Timing Test Load
DI
3V
0V
Z
Y
VO
0V
-VO
VO
1.5V
tPLH
1/2 VO
10%
tR
90% 90%
tPHL
1.5V
1/2 VO
10%
tF
VDIFF = V (Y) - V (Z)
VDIFF
tSKEW = | tPLH - tPHL |
OUTPUT NORMALLY LOW
OUTPUT NORMALLY HIGH
3V
0V
Y, Z
VOL
Y, Z
0V
1.5V 1.5V
VOL +0.5V
VOH -0.5V
2.3V
2.3V
tZL(SHDN), tZL tLZ
tZH(SHDN), tZH tHZ
DE
Figure 9. Driver Propagation Delays Figure 10. Driver Enable and Disable Times (except
MAX3081/MAX3084/MAX3087)
VOH
VOL
A
B
1V
-1V
1.5V 1.5V
OUTPUT
INPUT
RO
tPLH
tPHL
OUTPUT NORMALLY LOW
OUTPUT NORMALLY HIGH
3V
0V
VCC
RO
RO
0V
1.5V 1.5V
VOL + 0.5V
VOH - 0.5V
1.5V
1.5V
tZL(SHDN), tZL tLZ
tZH(SHDN), tZH tHZ
RE
Figure 11. Receiver Propagation Delays Figure 12. Receiver Enable and Disable Times (except
MAX3081/MAX3084/MAX3087)
MAX3080–MAX3089
16
Maxim Integrated
components with large amplitudes are evident. Figure
15 shows the same signal displayed for a MAX3083/
MAX3084/MAX3085, and MAX3089 with SRL = VCC),
transmitting under the same conditions. Figure 15’s
high-frequency harmonic components are much lower
in amplitude, compared with Figure 14’s, and the poten-
tial for EMI is significantly reduced. Figure 16
shows the same signal displayed for a MAX3080/
MAX3081/MAX3082, and MAX3089 with SRL = uncon-
nected, transmitting under the same conditions. Figure
16’s high-frequency harmonic components are even
lower.
In general, a transmitter’s rise time relates directly to the
length of an unterminated stub, which can be driven with
only minor waveform reflections. The following equation
expresses this relationship conservatively:
Length = tRISE / (10 x 1.5ns/ft)
where tRISE is the transmitter’s rise time.
For example, the MAX3080’s rise time is typically
1320ns, which results in excellent waveforms with a stub
length up to 90 feet. A system can work well with longer
unterminated stubs, even with severe reflections, if the
waveform settles out before the UART samples them.
Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
R
B
RECEIVER
OUTPUT
ATE
A
VID R
Figure 13. Receiver Propagation Delay Test Circuit
100kHz/div0Hz 1MHz
20dB/div
MAX3080/3089 FIG-14
Figure 14. Driver Output Waveform and FFT Plot of
MAX3086/MAX3087/MAX3088, and MAX3089 with
SRL = GND, Transmitting a 20kHz Signal
100kHz/div0Hz 1MHz
B
A
20dB/div
MAX3080/3089 FIG-15
Figure 15. Driver Output Waveform and FFT Plot of
MAX3083/MAX3084/MAX3085, and MAX3089
with SRL = VCC, Transmitting a 20kHz Signal
100kHz/div0Hz 1MHz
B
A
20dB/div
MAX3080/3089 FIG-16
Figure 16. Driver Output Waveform and FFT Plot of
MAX3080/MAX3081/MAX3082, and MAX3089
with SRL = Unconnected, Transmitting a 20kHz Signal
Maxim Integrated
17
Low-Power Shutdown Mode
(Except MAX3082/MAX3085/MAX3088)
Low-power shutdown mode is initiated by bringing both
RE high and DE low. In shutdown, the devices typically
draw only 1nA of supply current.
RE and DE may be driven simultaneously; the parts are
guaranteed not to enter shutdown if RE is high and DE
is low for less than 50ns. If the inputs are in this state
for at least 600ns, the parts are guaranteed to enter
shutdown.
Enable times tZH and tZL in the Switching Char-
acteristics tables assume the part was not in a low-
power shutdown state. Enable times tZH(SHDN) and
tZL(SHDN) assume the parts were shut down. It takes
drivers and receivers longer to become enabled from
low-power shutdown mode (tZH(SHDN), tZH(SHDN)) than
from driver/receiver-disable mode (tZH, tZL).
Driver Output Protection
Two mechanisms prevent excessive output current and
power dissipation caused by faults or by bus con-
tention. The first, a foldback current limit on the output
stage, provides immediate protection against short cir-
cuits over the whole common-mode voltage range (see
Typical Operating Characteristics). The second, a ther-
mal shutdown circuit, forces the driver outputs into a
high-impedance state if the die temperature becomes
excessive.
Line Length vs. Data Rate
The RS-485/RS-422 standard covers line lengths up to
4000 feet. For line lengths greater than 4000 feet, use
the repeater application shown in Figure 17.
Figures 18, 19, and 20 show the system differential volt-
age for the parts driving 4000 feet of 26AWG twisted-
pair wire at 110kHz into 120Ωloads.
Typical Applications
The MAX3082/MAX3085/MAX3088/MAX3089 trans-
ceivers are designed for bidirectional data communica-
tions on multipoint bus transmission lines. Figures 21
and 22 show typical network applications circuits.
These parts can also be used as line repeaters, with
cable lengths longer than 4000 feet, as shown in Figure 17.
To minimize reflections, the line should be terminated at
both ends in its characteristic impedance, and stub
lengths off the main line should be kept as short as
possible. The slew-rate-limited MAX3082/MAX3085,
and the two modes of the MAX3089, are more tolerant
of imperfect termination.
Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
120Ω
120ΩDATA IN
DATA OUT
R
D
RO
RE
DE
DI
A
B
Z
Y
MAX3080/MAX3081/MAX3083/
MAX3084/MAX3086/MAX3087/
MAX3089 (FULL DUPLEX)
NOTE: RE AND DE ON MAX3080/MAX3083/MAX3086/MAX3089 ONLY.
Figure 17. Line Repeater for MAX3080/MAX3081/MAX3083/
MAX3084/MAX3086/MAX3087, and MAX3089
in Full-Duplex Mode
5µs/div
VA - VB
DI
RO
1V/div
5V/div
5V/div
MAX3080/3089 FIG-18
Figure 18. MAX3080/MAX3081/MAX3082, and MAX3089
with SRL = Unconnected, System Differential Voltage at 50kHz
Driving 4000 feet of Cable
MAX3080–MAX3089
18
Maxim Integrated
Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
2µs/div
VA - VB
DI
RO
1V/div
5V/div
5V/div
MAX3080/3089 FIG-19
Figure 19. MAX3083/MAX3084/MAX3085, and MAX3089 with
SRL = VCC, System Differential Voltage at 50kHz Driving 4000
feet of Cable
1µs/div
VA - VB
DI
RO
1V/div
5V/div
5V/div
MAX3080/3089 FIG-20
Figure 20. MAX3086/MAX3087/MAX3088, and MAX3089 with
SRL = GND, System Differential Voltage at 200kHz Driving
4000 feet of Cable
DI RO DE
RE
A
B/Z*
RE
RERE
RO
RO
RO
DI
DI
DI
DE
DE
DE
DD
D
R
R
R
BB
B
A
A
A/Y*
120Ω120Ω
D
R
MAX3082
MAX3085
MAX3088
*MAX3089 (HALF-DUPLEX)
Figure 21. Typical Half-Duplex RS-485 Network
Maxim Integrated
19
Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
Figure 22. Typical Full-Duplex RS-485 Network
120Ω120Ω
R
D
RO
RE
DE
DI
A
B
Y
120Ω120Ω
DI
DI DIRO RO
RO
DE DE
DE
RE
RE
RE
Z
Z
Z
Z
YY
Y
AA
A
BB
B
DD
D
RR
R
MAX3080
MAX3081
MAX3083
MAX3084
MAX3086
MAX3087
MAX3089 (FULL-DUPLEX)
NOTE: RE AND DE ON MAX3080/MAX3083/MAX3086/MAX3089 ONLY.
8 Plastic DIP-40°C to +85°CMAX3085EPA
14 SO-40°C to +85°CMAX3083ESD
14 Plastic DIP0°C to +70°CMAX3083CPD
14 SO0°C to +70°C
MAX3083CSD
8 Plastic DIP-40°C to +85°CMAX3082EPA
8 SO-40°C to +85°CMAX3082ESA
8 Plastic DIP0°C to +70°CMAX3082CPA
8 SO0°C to +70°C
MAX3082CSA
8 Plastic DIP-40°C to +85°CMAX3081EPA
8 SO-40°C to +85°CMAX3081ESA
8 Plastic DIP0°C to +70°CMAX3081CPA
8 SO0°C to +70°C
MAX3081CSA
PIN-PACKAGETEMP RANGEPART
14 Plastic DIP-40°C to +85°CMAX3083EPD
8 SO0°C to +70°C
MAX3084CSA
8 Plastic DIP0°C to +70°CMAX3084CPA
8 SO-40°C to +85°CMAX3084ESA
8 Plastic DIP-40°C to +85°CMAX3084EPA
8 SO0°C to +70°C
MAX3085CSA
8 Plastic DIP0°C to +70°CMAX3085CPA
8 SO-40°C to +85°CMAX3085ESA
Ordering Information (continued)
14 SO0°C to +70°C
MAX3086CSD
14 Plastic DIP-40°C to +85°CMAX3089EPD
14 SO-40°C to +85°CMAX3089ESD
14 Plastic DIP0°C to +70°CMAX3089CPD
14 SO0°C to +70°C
MAX3089CSD
8 Plastic DIP-40°C to +85°CMAX3088EPA
8 SO-40°C to +85°CMAX3088ESA
8 Plastic DIP0°C to +70°CMAX3088CPA
8 SO0°C to +70°C
MAX3088CSA
8 Plastic DIP-40°C to +85°CMAX3087EPA
8 SO-40°C to +85°CMAX3087ESA
8 Plastic DIP0°C to +70°CMAX3087CPA
8 SO0°C to +70°C
MAX3087CSA
14 Plastic DIP-40°C to +85°CMAX3086EPD
14 SO-40°C to +85°CMAX3086ESD
14 Plastic DIP0°C to +70°CMAX3086CPD
PIN-PACKAGETEMP RANGEPART
Package Information
For the latest package outline information, go to
www.maxim-ic.com/packages.
MAX3080–MAX3089
20
Maxim Integrated
Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
21
Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000
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. The parametric values (min and max limits) shown in the Electrical
Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
© 2005 Maxim Integrated The Maxim logo and Maxim Integrated are trademarks of Maxim Integrated Products, Inc.