MAX13080E–MAX13084E/
MAX13086E–MAX13089E
LE
AVAILAB
+5.0V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
General Description
Features
The MAX13080E–MAX13089E +5.0V, ±15kV ESD-protected, RS-485/RS-422 transceivers feature one driver and
one receiver. These devices include fail-safe circuitry,
guaranteeing a logic-high receiver output when receiver
inputs are open or shorted. The receiver outputs a logichigh if all transmitters on a terminated bus are disabled
(high impedance). The MAX13080E family include a hotswap capability to eliminate false transitions on the bus
during power-up or hot insertion.
The MAX13080E/MAX13081E/MAX13082E feature
reduced slew-rate drivers that minimize EMI and
reduce reflections caused by improperly terminated
cables, allowing error-free data transmission up to
250kbps. The MAX13083E/MAX13084E also feature
slew-rate-limited drivers but allow transmit speeds up to
500kbps. The MAX13086E/MAX13087E/ MAX13088E
driver slew rates are not limited, making transmit
speeds up to 16Mbps possible. The MAX13089E slew
rate is pin selectable for 250kbps, 500kbps, and
16Mbps.
o +5.0V Operation
The MAX13082E/MAX13088E are intended for halfduplex communications, and the MAX13080E/
MAX13081E/MAX13083E/MAX13084E/MAX13086E/
MAX13087E are intended for full-duplex communications. The MAX13089E is selectable for half-duplex or
full-duplex operation. It also features independently
programmable receiver and transmitter output phase
through separate pins.
The MAX13080E family transceivers draw 1.2mA of
Functional
supply current when unloaded
or when Diagrams
fully loaded with
the drivers disabled. All devices have a 1/8-unit load
receiver input impedance, allowing up to 256 transceivers on the bus.
The MAX13080E/MAX13083E/MAX13086E/MAX13089E
are available in 14-pin PDIP and 14-pin SO packages. The
MAX13081E/MAX13082E/MAX13084E/MAX13087E/
MAX13088E are available in 8-pin PDIP and 8-pin SO
packages. The devices operate over the commercial,
extended, and automotive temperature ranges.
o Available in Industry-Standard 8-Pin SO Package
Applications
o Extended ESD Protection for RS-485/RS-422 I/O Pins
±15kV Human Body Model
o True Fail-Safe Receiver While Maintaining
EIA/TIA-485 Compatibility
o Hot-Swap Input Structures on DE and RE
o Enhanced Slew-Rate Limiting Facilitates ErrorFree Data Transmission
(MAX13080E–MAX13084E/MAX13089E)
o Low-Current Shutdown Mode (Except
MAX13081E/MAX13084E/MAX13087E)
o Pin-Selectable Full-/Half-Duplex Operation
(MAX13089E)
o Phase Controls to Correct for Twisted-Pair
Reversal (MAX13089E)
o Allow Up to 256 Transceivers on the Bus
Ordering
Information
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX13080ECPD+
0°C to +70°C
14 PDIP
MAX13080ECSD+
0°C to +70°C
14 SO
MAX13080EEPD+
-40°C to +85°C
MAX13080EESD+
-40°C to +85°C
MAX13080EAPD+
14 PDIP
14 SO
14 PDIP
-40°C to +125°C
14 SO
MAX13080EASD+
-40°C to +125°C
+Denotes a lead(Pb)-free/RoHS-compliant package.
Ordering Information continued at end of data sheet.
Utility Meters
Lighting Systems
Industrial Control
Selector Guide, Pin Configurations, and Typical Operating
Circuits appear at end of data sheet.
Telecom
Security Systems
Pin Configurations appear at end of data sheet.
Instrumentation
Functional
Diagrams continued at end of data sheet.
UCSP is Profibus
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.
19-3590; Rev 2; 11/11
MAX13080E–MAX13084E/
MAX13086E–MAX13089E
+5.0V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
ABSOLUTE MAXIMUM RATINGS
Continuous Power Dissipation (TA = +70°C)
8-Pin SO (derate 5.88mW/°C above +70°C) .................471mW
8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) .....727mW
14-Pin SO (derate 8.33mW/°C above +70°C) ...............667mW
14-Pin Plastic DIP (derate 10.0mW/°C above +70°C) ...800mW
Operating Temperature Ranges
MAX1308_EC_ _ .................................................0°C to +75°C
MAX1308_EE_ _ ..............................................-40°C to +85°C
MAX1308_EA_ _ ............................................-40°C to +125°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
(All Voltages Referenced to GND)
Supply Voltage (VCC).............................................................+6V
Control Input Voltage (RE, DE, SLR,
H/F, TXP, RXP)......................................................-0.3V to +6V
Driver Input Voltage (DI)...........................................-0.3V to +6V
Driver Output Voltage (Z, Y, A, B) .............................-8V to +13V
Receiver Input Voltage (A, B)....................................-8V to +13V
Receiver Input Voltage
Full Duplex (A, B) ..................................................-8V to +13V
Receiver Output Voltage (RO)....................-0.3V to (VCC + 0.3V)
Driver Output Current .....................................................±250mA
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.
DC ELECTRICAL CHARACTERISTICS
(VCC = +5.0V ±10%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5.0V and TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
5.5
V
DRIVER
VCC Supply-Voltage Range
VCC
Differential Driver Output
VOD
4.5
RL = 100Ω (RS-422), Figure 1
3
VCC
RL = 54Ω (RS-485), Figure 1
2
VCC
VCC
0.2
V
3
V
0.2
V
0.8
V
Change in Magnitude of
Differential Output Voltage
ΔVOD
RL = 100Ω or 54Ω, Figure 1 (Note 2)
Driver Common-Mode Output
Voltage
VOC
RL = 100Ω or 54Ω, Figure 1
Change in Magnitude of
Common-Mode Voltage
ΔVOC
RL = 100Ω or 54Ω, Figure 1 (Note 2)
Input-High Voltage
VIH
DE, DI, RE, TXP, RXP, H/F
Input-Low Voltage
VIL
DE, DI, RE, TXP, RXP, H/F
VHYS
DE, DI, RE, TXP, RXP, H/F
Input Hysteresis
Input Current
IIN1
Input Impedance First Transition
Input Current
IIN2
VCC / 2
3
±1
µA
1
10
kΩ
TXP, RXP, H/F internal pulldown
10
40
µA
VCC - 0.4
VCC x 0.3
SRL Input-Low Voltage
2
mV
DE
DE, DI, RE
SRL Input-Middle Voltage
Output Leakage (Y and Z)
Full Duplex
V
100
SRL Input-High Voltage
V
VCC x 0.7
0.4
SRL = VCC
SRL Input Current
75
SRL = GND
IO
V
No load
DE = GND,
VCC = GND or VCC
-75
VIN = +12V
VIN = -7V
125
-100
V
V
µA
µA
Maxim Integrated
MAX13080E–MAX13084E/
MAX13086E–MAX13089E
+5.0V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
DC ELECTRICAL CHARACTERISTICS (continued)
(VCC = +5.0V ±10%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5.0V and TA = +25°C.) (Note 1)
PARAMETER
Driver Short-Circuit Output
Current
Driver Short-Circuit Foldback
Output Current
SYMBOL
IOSD
IOSDF
CONDITIONS
MIN
TYP
MAX
0 ≤ VOUT ≤ +12V (Note 3)
40
250
-7V ≤ VOUT ≤ VCC (Note 3)
-250
-40
0 ≤ VOUT ≤ +12V, +85°C ≤ TA ≤ +125°C
(Note 3)
40
270
-7V ≤ VOUT ≤ VCC, +85°C ≤ TA ≤ +125°C
(Note 3)
-270
-40
(VCC - 1V) ≤ VOUT ≤ +12V (Note 3)
20
-7V ≤ VOUT ≤ +1V (Note 3)
-20
UNITS
mA
mA
Thermal-Shutdown Threshold
TTS
175
°C
Thermal-Shutdown Hysteresis
TTSH
15
°C
Input Current (A and B)
IA, B
DE = GND,
VCC = GND or VCC
Receiver Differential Threshold
Voltage
VTH
-7V ≤ VCM ≤ +12V
Receiver Input Hysteresis
ΔVTH
VA + VB = 0V
RO Output-High Voltage
VOH
IO = -1mA
RO Output-Low Voltage
VOL
IO = 1mA
0.4
V
Three-State Output Current at
Receiver
IOZR
0 ≤ VO ≤ VCC
±1
µA
Receiver Input Resistance
RIN
-7V ≤ VCM ≤ +12V
Receiver Output Short-Circuit
Current
IOSR
0V ≤ VRO ≤ VCC
VIN = +12V
VIN = -7V
125
-100
µA
RECEIVER
-200
-125
-50
15
mV
mV
VCC - 0.6
V
96
kΩ
±110
mA
SUPPLY CURRENT
Supply Current
Supply Current in Shutdown
Mode
ICC
ISHDN
No load, RE = 0, DE = VCC
1.2
1.8
No load, RE = VCC, DE = VCC
1.2
1.8
No load, RE = 0, DE = 0
1.2
1.8
RE = VCC, DE = GND
2.8
10
Human Body Model
±15
kV
Contact Discharge
IEC 61000-4-2
±6
kV
mA
µA
ESD PROTECTION
ESD Protection for Y, Z, A, and B
Maxim Integrated
3
MAX13080E–MAX13084E/
MAX13086E–MAX13089E
+5.0V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
DRIVER SWITCHING CHARACTERISTICS
MAX13080E/MAX13081E/MAX13082E/MAX13089E WITH SRL = UNCONNECTED (250kbps)
(VCC = +5.0V ±10%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5.0V and TA = +25°C.)
PARAMETER
Driver Propagation Delay
Driver Differential Output Rise or
Fall Time
Differential Driver Output Skew
|tDPLH - tDPHL|
SYMBOL
tDPLH
tDPHL
CONDITIONS
CL= 50pF, RL= 54Ω, Figures 2 and 3
tR , tF
CL= 50pF, RL= 54Ω, Figures 2 and 3
tDSKEW
CL= 50pF, RL= 54Ω, Figures 2 and 3
Maximum Data Rate
MIN
TYP
MAX
UNITS
350
1800
350
1800
400
1900
ns
250
ns
250
ns
kbps
Driver Enable to Output High
tDZH
Figure 4
2500
ns
Driver Enable to Output Low
tDZL
Figure 5
2500
ns
Driver Disable Time from Low
tDLZ
Figure 5
100
ns
Driver Disable Time from High
tDHZ
Figure 4
100
ns
Driver Enable from Shutdown to
Output High
tDZH(SHDN) Figure 4
5500
ns
Driver Enable from Shutdown to
Output Low
tDZL(SHDN) Figure 5
5500
ns
700
ns
Time to Shutdown
tSHDN
50
340
RECEIVER SWITCHING CHARACTERISTICS
MAX13080E/MAX13081E/MAX13082E/MAX13089E WITH SRL = UNCONNECTED (250kbps)
(VCC = +5.0V ±10%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5.0V and TA = +25°C.)
PARAMETER
Receiver Propagation Delay
Receiver Output Skew
|tRPLH - tRPHL|
SYMBOL
tRPLH
tRPHL
tRSKEW
CONDITIONS
TYP
MAX
200
CL = 15pF, Figures 6 and 7
200
CL = 15pF, Figures 6 and 7
Maximum Data Rate
30
250
UNITS
ns
ns
kbps
Receiver Enable to Output Low
tRZL
Figure 8
50
ns
Receiver Enable to Output High
tRZH
Figure 8
50
ns
Receiver Disable Time from Low
tRLZ
Figure 8
50
ns
Receiver Disable Time from High
tRHZ
Figure 8
50
ns
Receiver Enable from Shutdown
to Output High
tRZH(SHDN) Figure 8
5500
ns
Receiver Enable from Shutdown
to Output Low
tRZL(SHDN) Figure 8
5500
ns
700
ns
Time to Shutdown
4
MIN
tSHDN
50
340
Maxim Integrated
MAX13080E–MAX13084E/
MAX13086E–MAX13089E
+5.0V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
DRIVER SWITCHING CHARACTERISTICS
MAX13083E/MAX13084E/MAX13089E WITH SRL = VCC (500kbps)
(VCC = +5.0V ±10%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5.0V and TA = +25°C.)
PARAMETER
Driver Propagation Delay
Driver Differential Output Rise or
Fall Time
Differential Driver Output Skew
|tDPLH - tDPHL|
SYMBOL
tDPLH
tDPHL
CONDITIONS
CL = 50pF, RL = 54Ω, Figures 2 and 3
tR , tF
CL = 50pF, RL = 54Ω, Figures 2 and 3
tDSKEW
CL = 50pF, RL = 54Ω, Figures 2 and 3
Maximum Data Rate
MIN
TYP
MAX
UNITS
200
1000
200
1000
250
900
ns
140
ns
500
ns
kbps
Driver Enable to Output High
tDZH
Figure 4
2500
Driver Enable to Output Low
tDZL
Figure 5
2500
ns
Driver Disable Time from Low
tDLZ
Figure 5
100
ns
Driver Disable Time from High
tDHZ
Figure 4
100
ns
Driver Enable from Shutdown to
Output High
tDZH(SHDN) Figure 4
5500
ns
Driver Enable from Shutdown to
Output Low
tDZL(SHDN) Figure 5
5500
ns
700
ns
Time to Shutdown
tSHDN
50
340
ns
RECEIVER SWITCHING CHARACTERISTICS
MAX13083E/MAX13084E/MAX13089E WITH SRL = VCC (500kbps)
(VCC = +5.0V ±10%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5.0V and TA = +25°C.)
PARAMETER
Receiver Propagation Delay
Receiver Output Skew
|tRPLH - tRPHL|
SYMBOL
tRPLH
tRPHL
tRSKEW
CONDITIONS
MIN
TYP
200
CL = 15pF, Figures 6 and 7
200
CL = 15pF, Figures 6 and 7
Maximum Data Rate
MAX
30
500
UNITS
ns
ns
kbps
Receiver Enable to Output Low
tRZL
Figure 8
50
ns
Receiver Enable to Output High
tRZH
Figure 8
50
ns
Receiver Disable Time from Low
tRLZ
Figure 8
50
ns
Receiver Disable Time from High
tRHZ
Figure 8
50
ns
Receiver Enable from Shutdown
to Output High
tRZH(SHDN) Figure 8
5500
ns
Receiver Enable from Shutdown
to Output Low
tRZL(SHDN) Figure 8
5500
ns
700
ns
Time to Shutdown
Maxim Integrated
tSHDN
50
340
5
MAX13080E–MAX13084E/
MAX13086E–MAX13089E
+5.0V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
DRIVER SWITCHING CHARACTERISTICS
MAX13086E/MAX13087E/MAX13088E/MAX13089E WITH SRL = GND (16Mbps)
(VCC = +5.0V ±10%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5.0V and TA = +25°C.)
PARAMETER
Driver Propagation Delay
Driver Differential Output Rise or
Fall Time
Differential Driver Output Skew
|tDPLH - tDPHL|
SYMBOL
tDPLH
tDPHL
CONDITIONS
MIN
TYP
MAX
50
CL = 50pF, RL= 54Ω, Figures 2 and 3
50
UNITS
ns
tR , tF
CL = 50pF, RL= 54Ω, Figures 2 and 3
15
ns
tDSKEW
CL = 50pF, RL= 54Ω, Figures 2 and 3
8
ns
Maximum Data Rate
16
Mbps
Driver Enable to Output High
tDZH
Figure 4
150
ns
Driver Enable to Output Low
tDZL
Figure 5
150
ns
Driver Disable Time from Low
tDLZ
Figure 5
100
ns
Driver Disable Time from High
tDHZ
Figure 4
100
ns
Driver Enable from Shutdown to
Output High
tDZH(SHDN) Figure 4
2200
ns
Driver Enable from Shutdown to
Output Low
tDZL(SHDN) Figure 5
2200
ns
700
ns
Time to Shutdown
tSHDN
50
340
RECEIVER SWITCHING CHARACTERISTICS
MAX13086E/MAX13087E/MAX13088E/MAX13089E WITH SRL = GND (16Mbps)
(VCC = +5.0V ±10%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5.0V and TA = +25°C.)
PARAMETER
Receiver Propagation Delay
Receiver Output Skew
|tRPLH - tRPHL|
SYMBOL
tRPLH
tRPHL
tRSKEW
CONDITIONS
MIN
CL = 15pF, Figures 6 and 7
TYP
MAX
50
80
50
80
CL = 15pF, Figures 6 and 7
Maximum Data Rate
13
16
UNITS
ns
ns
Mbps
Receiver Enable to Output Low
tRZL
Figure 8
50
ns
Receiver Enable to Output High
tRZH
Figure 8
50
ns
Receiver Disable Time from Low
tRLZ
Figure 8
50
ns
Receiver Disable Time from High
tRHZ
Figure 8
50
ns
Receiver Enable from Shutdown
to Output High
tRZH(SHDN) Figure 8
2200
ns
Receiver Enable from Shutdown
to Output Low
tRZL(SHDN) Figure 8
2200
ns
700
ns
Time to Shutdown
tSHDN
50
340
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: ΔVOD and ΔVOC are the changes in VOD and VOC, respectively, when the DI input changes state.
Note 3: The short-circuit output current applies to peak current just prior to foldback current limiting. The short-circuit foldback output
current applies during current limiting to allow a recovery from bus contention.
6
Maxim Integrated
MAX13080E–MAX13084E/
MAX13086E–MAX13089E
+5.0V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
Typical Operating Characteristics
(VCC = +5.0V, TA = +25°C, unless otherwise noted.)
1.30
1.20
DE = VCC
1.10
DE = 0
40
30
20
60
1.00
10
0.90
20
1
2
3
4
0
5
1
2
3
4
5
OUTPUT LOW VOLTAGE (V)
RECEIVER OUTPUT-HIGH VOLTAGE
vs. TEMPERATURE
RECEIVER OUTPUT-LOW VOLTAGE
vs. TEMPERATURE
DRIVER DIFFERENTIAL OUTPUT CURRENT
vs. DIFFERENTIAL OUTPUT VOLTAGE
4.6
4.4
0.6
0.5
0.4
0.3
0.2
4.2
0.1
4.0
0
140
120
100
80
60
40
20
0
-40 -25 -10
-40 -25 -10 5 20 35 50 65 80 95 110 125
160
MAX13080E-89E toc06
IO = 1mA
0.7
DIFFERENTIAL OUTPUT CURRENT (mA)
4.8
MAX13080E-89E toc05
5.0
0.8
OUTPUT LOW VOLTAGE (V)
5.2
MAX13080E-89E toc04
OUTPUT HIGH VOLTAGE (V)
IO = -1mA
5 20 35 50 65 80 95 110 125
0
1
2
3
4
5
TEMPERATURE (°C)
DIFFERENTIAL OUTPUT VOLTAGE (V)
DRIVER DIFFERENTIAL OUTPUT
VOLTAGE vs. TEMPERATURE
OUTPUT CURRENT vs. TRANSMITTER
OUTPUT-HIGH VOLTAGE
OUTPUT CURRENT vs. TRANSMITTER
OUTPUT-LOW VOLTAGE
4.0
3.6
3.2
2.8
2.4
2.0
180
160
140
120
100
80
60
5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
Maxim Integrated
180
160
140
120
100
80
60
40
40
20
20
0
0
-40 -25 -10
200
MAX13080E-89E toc09
4.4
200
OUTPUT CURRENT (mA)
RL = 54Ω
OUTPUT CURRENT (mA)
4.8
MAX13080E-89E toc07
TEMPERATURE (°C)
MAX13080E-89E toc08
OUTPUT HIGH VOLTAGE (V)
30
TEMPERATURE (°C)
5.4
DIFFERENTIAL OUTPUT VOLTAGE (V)
40
0
0
-40 -25 -10 5 20 35 50 65 80 95 110 125
50
10
0
0.80
MAX13080E-89E toc03
50
70
OUTPUT CURRENT (mA)
1.40
MAX13080E-89E toc02
SUPPLY CURRENT (mA)
1.50
60
OUTPUT CURRENT (mA)
NO LOAD
MAX13080E-89E toc01
1.60
OUTPUT CURRENT
vs. RECEIVER OUTPUT-LOW VOLTAGE
OUTPUT CURRENT
vs. RECEIVER OUTPUT-HIGH VOLTAGE
SUPPLY CURRENT vs. TEMPERATURE
-7 -6 -5 -4 -3 -2 -1 0
1
2
OUTPUT HIGH VOLTAGE (V)
3
4
5
0
2
4
6
8
10
12
OUTPUT-LOW VOLTAGE (V)
7
MAX13080E–MAX13084E/
MAX13086E–MAX13089E
+5.0V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
Typical Operating Characteristics (continued)
(VCC = +5.0V, TA = +25°C, unless otherwise noted.)
6
5
4
3
2
tDPHL
1000
tDPLH
900
800
700
550
tDPHL
500
MAX13080E-89E toc12
7
1100
600
DRIVER PROPAGATION DELAY (ns)
8
1200
MAX13080E-89E toc11
SHUTDOWN CURRENT (μA)
9
DRIVER PROPAGATION DELAY (ns)
MAX13080E-89E toc10
10
DRIVER PROPAGATION DELAY
vs. TEMPERATURE (500kbps)
DRIVER PROPAGATION DELAY
vs. TEMPERATURE (250kbps)
SHUTDOWN CURRENT
vs. TEMPERATURE
tDPLH
450
400
350
1
0
-40 -25 -10
5 20 35 50 65 80 95 110 125
-40 -25 -10 5 20 35 50 65 80 95 110 125
5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
DRIVER PROPAGATION DELAY
vs. TEMPERATURE (16Mbps)
RECEIVER PROPAGATION DELAY
vs. TEMPERATURE (250kpbs AND 500kbps)
RECEIVER PROPAGATION DELAY
vs. TEMPERATURE (16Mbps)
50
40
30
tDPHL
20
10
140
120
100
tDPLH
80
60
tDPHL
40
20
tDPLH
0
5 20 35 50 65 80 95 110 125
160
140
120
100
80
tDPLH
60
40
tDPHL
20
0
0
-40 -25 -10
MAX13080E-89E toc15
160
180
RECEIVER PROPAGATION DELAY (ns)
60
MAX13080E-89E toc14
70
180
RECEIVER PROPAGATION DELAY (ns)
MAX13080E-89E toc13
80
DRIVER PROPAGATION DELAY (ns)
300
600
-40 -25 -10
-40 -25 -10
TEMPERATURE (°C)
5 20 35 50 65 80 95 110 125
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
TEMPERATURE (°C)
RECEIVER PROPAGATION DELAY
(250kbps AND 500kbps)
DRIVER PROPAGATION DELAY (250kbps)
MAX13080E-89E toc16
MAX13080E-89E toc17
RL = 100Ω
RL = 100Ω
DI
2V/div
VA - V B
5V/div
RO
2V/div
VY - VZ
5V/div
2μs/div
8
200ns/div
Maxim Integrated
MAX13080E–MAX13084E/
MAX13086E–MAX13089E
+5.0V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
Typical Operating Characteristics (continued)
(VCC = +5.0V, TA = +25°C, unless otherwise noted.)
RECEIVER PROPAGATION DELAY (16Mbps)
DRIVER PROPAGATION DELAY (16Mbps)
DRIVER PROPAGATION DELAY (500kbps)
MAX13080E-89E toc18
MAX13080E-89E toc19
RL = 100Ω
RL = 100Ω
MAX13080E-89E toc20
RL = 100Ω
VB
2V/div
DI
2V/div
DI
2V/div
VA
2V/div
VZ
2V/div
V Y - VZ
5V/div
RO
2V/div
VY
2V/div
40ns/div
10ns/div
400ns/div
Test Circuits and Waveforms
VCC
Y
DI
VCC/2
0
RL/2
VOD
tDPLH
tDPHL
1/2 VO
Z
RL/2
VO
VOC
Y
1/2 VO
Z
VO
VDIFF 0
-VO
Figure 1. Driver DC Test Load
VDIFF = V (Y) - V (Z)
10%
90%
90%
10%
tF
tR
tSKEW = | tDPLH - tDPHL |
VCC
Figure 3. Driver Propagation Delays
DE
Y
DI
VOD
RL
CL
Z
Figure 2. Driver Timing Test Circuit
Maxim Integrated
9
MAX13080E–MAX13084E/
MAX13086E–MAX13089E
+5.0V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
Test Circuits and Waveforms (continued)
S1
D
0 OR VCC
OUT
CL
50pF
GENERATOR
RL = 500Ω
50Ω
VCC
DE
VCC / 2
tDZH, tDZH(SHDN)
0
0.25V
OUT
VOH
VOM = (0 + VOH) / 2
0
tDHZ
Figure 4. Driver Enable and Disable Times (tDHZ, tDZH, tDZH(SHDN))
VCC
RL = 500Ω
S1
0 OR VCC
D
OUT
CL
50pF
GENERATOR
50Ω
VCC
DE
VCC / 2
tDZL, tDZL(SHDN)
0
tDLZ
VCC
VOM = (VOL + VCC) / 2
OUT
VOL
0.25V
Figure 5. Driver Enable and Disable Times (tDZL, tDLZ, tDLZ(SHDN))
10
Maxim Integrated
MAX13080E–MAX13084E/
MAX13086E–MAX13089E
+5.0V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
Test Circuits and Waveforms (continued)
RECEIVER
OUTPUT
B
VID
ATE
R
A
+1V
B
-1V
tRPLH
VOH
A
RO
tRPHL
VCC/2
VOL
THE RISE TIME AND FALL TIME OF INPUTS A AND B < 4ns
Figure 6. Receiver Propagation Delay Test Circuit
Figure 7. Receiver Propagation Delays
S1
+1.5V
S3
VCC
1kΩ
-1.5V
VID
R
CL
15pF
GENERATOR
S2
50Ω
S1 OPEN
S2 CLOSED
S3 = +1.5V
S1 CLOSED
S2 OPEN
S3 = -1.5V
VCC
VCC
VCC/2
RE
RE
0
0
tRZH, tRZH(SHDN)
tRZL, tRZL(SHDN)
VOH
RO
VCC
VOH / 2
(VOL + VCC) / 2
RO
0
S1 OPEN
S2 CLOSED
S3 = +1.5V
VOL
S1 CLOSED
S2 OPEN
S3 = -1.5V
VCC
VCC/2
VCC/2
RE
tRHZ
VCC
0
RE
0
tRLZ
VCC
VOH
0.25V
RO
0
RO
0.25V
VOL
Figure 8. Receiver Enable and Disable Times
Maxim Integrated
11
MAX13080E–MAX13084E/
MAX13086E–MAX13089E
+5.0V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
Pin Description
PIN
MAX13080E MAX13081E
MAX13082E
MAX13083E MAX13084E
MAX13088E
MAX13086E MAX13087E
FULL-DUPLEX
DEVICES
NAME
HALFDUPLEX
DEVICES
FULLDUPLEX
MODE
HALFDUPLEX
MODE
FUNCTION
1, 8, 13
—
—
—
—
N.C.
No Connect. Not internally connected, can be connected
to GND.
—
—
—
1
1
H/F
Half-/Full-Duplex Select Input. Connect H/F to VCC for
half-duplex mode; connect H/F to GND or leave
unconnected for full-duplex mode.
2
2
1
2
2
RO
Receiver Output. When RE is low and if (A - B) ≥ -50mV,
RO is high; if (A - B) ≤ -200mV, RO is low.
RE
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 is a hot-swap
input (see the Hot-Swap Capability section for details).
3
—
2
3
3
4
—
3
4
4
DE
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. DE is a hot-swap input (see the HotSwap Capability section for details).
5
3
4
5
5
DI
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.
—
—
—
6
6
SRL
Slew-Rate Limit Selector Input. Connect SRL to ground for
16Mbps communication rate; connect SRL to VCC for
500kbps communication rate. Leave SRL unconnected for
250kbps communication rate.
6, 7
4
5
7
7
GND
Ground
—
—
—
8
8
TXP
Transmitter Phase. Connect TXP to ground or leave TXP
unconnected for normal transmitter phase/polarity. Connect
TXP to VCC to invert the transmitter phase/polarity.
9
5
—
9
—
Y
Noninverting Driver Output
Y
Noninverting Driver Output and Noninverting Receiver
Input*
—
12
MAX13089E
—
—
—
9
10
6
—
10
—
Z
Inverting Driver Output
—
—
—
—
10
Z
Inverting Driver Output and Inverting Receiver Input*
11
7
—
11
—
B
Inverting Receiver Input
—
—
—
—
11
B
Receiver Input Resistors*
—
—
7
—
—
B
Inverting Receiver Input and Inverting Driver Output
Maxim Integrated
MAX13080E–MAX13084E/
MAX13086E–MAX13089E
+5.0V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
Pin Description (continued)
PIN
MAX13080E MAX13081E
MAX13082E
MAX13083E MAX13084E
MAX13088E
MAX13086E MAX13087E
FULL-DUPLEX
DEVICES
HALFDUPLEX
DEVICES
MAX13089E
NAME
FUNCTION
FULLHALFDUPLEX DUPLEX
MODE
MODE
12
8
—
12
—
A
Noninverting Receiver Input
—
—
—
—
12
A
Receiver Input Resistors*
—
—
6
—
—
A
Noninverting Receiver Input and Noninverting Driver
Output
—
—
—
13
13
RXP
Receiver Phase. Connect RXP to GND or leave RXP
unconnected for normal transmitter phase/polarity.
Connect RXP to VCC to invert receiver phase/polarity.
14
1
8
14
14
VCC
Positive Supply VCC = +5.0V ±10%. Bypass VCC to GND
with a 0.1µF capacitor.
*MAX13089E only. In half-duplex mode, the driver outputs serve as receiver inputs. The full-duplex receiver inputs (A and B) still have a
1/8-unit load (96kΩ), but are not connected to the receiver.
Function Tables
MAX13080E/MAX13083E/MAX13086E
MAX13081E/MAX13084E/MAX13086E/
MAX13087E
TRANSMITTING
INPUTS
OUTPUTS
TRANSMITTING
RE
DE
DI
Z
Y
INPUT
X
1
1
0
1
DI
Z
Y
X
1
0
1
0
1
0
1
0
0
X
High-Z
High-Z
0
1
0
1
0
X
OUTPUTS
Shutdown
RECEIVING
RECEIVING
INPUTS
INPUTS
OUTPUT
OUTPUT
A, B
RO
RE
DE
A, B
RO
≥ -50mV
1
0
X
≥ -50mV
1
≤ -200mV
0
0
X
≤ -200mV
0
Open/shorted
1
0
X
Open/
shorted
1
1
1
X
High-Z
1
0
X
Shutdown
Maxim Integrated
13
MAX13080E–MAX13084E/
MAX13086E–MAX13089E
+5.0V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
Function Tables (continued)
MAX13082E/MAX13088E
RECEIVING
TRANSMITTING
INPUTS
INPUTS
OUTPUTS
OUTPUTS
RE
DE
DI
B/Z
A/Y
RE
DE
A-B
RO
X
1
1
0
1
0
X
≥ -50mV
1
X
1
0
1
0
0
X
≤ -200mV
0
0
0
X
High-Z
1
0
X
0
X
Open/
shorted
1
1
1
X
High-Z
1
0
X
Shutdown
High-Z
Shutdown
MAX13089E
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
X
1
0
X
High-Z
Shutdown
RECEIVING
INPUTS
OUTPUTS
H/F
RXP
RE
DE
0
0
0
0
0
0
0
1
A, B
Y, Z
RO
X
> -50mV
X
1
X
< -200mV
X
0
0
X
> -50mV
X
0
0
1
0
X
< -200mV
X
1
1
0
0
0
X
> -50mV
1
1
0
0
0
X
< -200mV
0
1
1
0
0
X
> -50mV
0
1
1
0
0
X
< -200mV
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
X = Don’t care; shutdown mode, driver, and receiver outputs are high impedance.
14
Maxim Integrated
MAX13080E–MAX13084E/
MAX13086E–MAX13089E
+5.0V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
Detailed Description
The MAX13080E–MAX13089E 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 the Fail-Safe section). The
MAX13080E/MAX13082E/MAX13083E/MAX13086E/
MAX13088E/MAX13089E also feature a hot-swap capability allowing line insertion without erroneous data transfer (see the Hot Swap Capability section). The
MAX13080E/MAX13081E/MAX13082E feature reduced
slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing
error-free data transmission up to 250kbps. The
MAX13083E/MAX13084E also offer slew-rate limits
allowing transmit speeds up to 500kbps. The
MAX13086E/MAX13087E/MAX13088Es’ driver slew
rates are not limited, making transmit speeds up to
16Mbps possible. The MAX13089E’s slew rate is selectable between 250kbps, 500kbps, and 16Mbps by driving a selector pin with a three-state driver.
The MAX13082E/MAX13088E are half-duplex transceivers,
while the MAX13080E/MAX13081E/ MAX13083E/
MAX13084E/MAX13086E/MAX13087E are full-duplex
transceivers. The MAX13089E is selectable between
half- and full-duplex communication by driving a selector pin (H/F) high or low, respectively.
All devices operate from a single +5.0V supply. Drivers
are output short-circuit current limited. Thermal-shutdown
circuitry protects drivers against excessive power dissipation. When activated, the thermal-shutdown circuitry
places the driver outputs into a high-impedance state.
Receiver Input Filtering
The receivers of the MAX13080E–MAX13084E, and the
MAX13089E when operating in 250kbps 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 25%
due to this filtering.
Fail-Safe
The MAX13080E 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 input 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
Maxim Integrated
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 MAX13080E
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.
Hot-Swap Capability (Except
MAX13081E/MAX13084E/MAX13087E)
Hot-Swap Inputs
When circuit boards are inserted into a hot or powered
backplane, differential disturbances to the data bus
can lead to data errors. Upon initial circuit board insertion, the data communication processor undergoes its
own power-up sequence. During this period, the
processor’s logic-output drivers are high impedance
and are unable to drive the DE and RE inputs of these
devices to a defined logic level. Leakage currents up to
±10µA from the high-impedance state of the processor’s logic drivers could cause standard CMOS enable
inputs of a transceiver to drift to an incorrect logic level.
Additionally, parasitic circuit board capacitance could
cause coupling of VCC or GND to the enable inputs.
Without the hot-swap capability, these factors could
improperly enable the transceiver’s driver or receiver.
When VCC rises, an internal pulldown circuit holds DE
low and RE high. After the initial power-up sequence,
the pulldown circuit becomes transparent, resetting the
hot-swap tolerable input.
Hot-Swap Input Circuitry
The enable inputs feature hot-swap capability. At the
input there are two NMOS devices, M1 and M2
(Figure 9). When VCC ramps from zero, an internal 7µs
timer turns on M2 and sets the SR latch, which also
turns on M1. Transistors M2, a 500µA current sink, and
M1, a 100µA current sink, pull DE to GND through a
5kΩ resistor. M2 is designed to pull DE to the disabled
state against an external parasitic capacitance up to
100pF that can drive DE high. After 7µs, the timer
deactivates M2 while M1 remains on, holding DE low
against three-state leakages that can drive DE high. M1
remains on until an external source overcomes the
required input current. At this time, the SR latch resets
and M1 turns off. When M1 turns off, DE reverts to a
standard, high-impedance CMOS input. Whenever VCC
drops below 1V, the hot-swap input is reset.
For RE there is a complementary circuit employing two
PMOS devices pulling RE to VCC.
15
MAX13080E–MAX13084E/
MAX13086E–MAX13089E
+5.0V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
tion. Drive H/F high for half-duplex operation. In fullduplex mode, the pin configuration of the driver and
receiver is the same as that of a MAX13080E. In halfduplex mode, the receiver inputs are internally connected to the driver outputs through a resistor-divider. This
effectively changes the function of the device’s outputs.
Y becomes the noninverting driver output and receiver
input, Z becomes the inverting driver output and receiver
input. In half-duplex mode, A and B are still connected to
ground through an internal resistor-divider but they are
not internally connected to the receiver.
VCC
10μs
TIMER
SR LATCH
TIMER
±15kV ESD Protection
5kΩ
DE
(HOT SWAP)
DE
100μA
500μA
M1
M2
Figure 9. Simplified Structure of the Driver Enable Pin (DE)
MAX13089E Programming
The MAX13089E has several programmable operating
modes. Transmitter rise and fall times are programmable, resulting in maximum data rates of 250kbps,
500kbps, and 16Mbps. To select the desired data rate,
drive SRL to one of three possible states by using a
three-state driver: V CC , GND, or unconnected. For
250kbps operation, set the three-state device in highimpedance mode or leave SRL unconnected. For
500kbps operation, drive SRL high or connect it to VCC.
For 16Mbps 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 backward
from normal orientation. The MAX13089E has two pins
that invert the phase of the driver and the receiver to correct this problem. For normal operation, drive TXP and
RXP low, connect them to ground, or leave them unconnected (internal pulldown). To invert the driver 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 MAX13089E can operate in full- or half-duplex
mode. Drive H/F low, leave it unconnected (internal
pulldown), or connect it to GND for full-duplex opera-
16
As with all Maxim devices, ESD-protection structures
are incorporated on all pins to protect against electrostatic discharges encountered during handling and
assembly. The driver outputs and receiver inputs of the
MAX13080E family of devices have extra protection
against static electricity. Maxim’s engineers have developed state-of-the-art structures to protect these pins
against ESD of ±15kV without damage. The ESD structures withstand high ESD in all states: normal operation,
shutdown, and powered down. After an ESD event, the
MAX13080E family keep working without latchup or
damage.
ESD protection can be tested in various ways. The
transmitter outputs and receiver inputs of the
MAX13080E family are characterized for protection to
the following limits:
• ±15kV using the Human Body Model
• ±6kV using the Contact Discharge method specified
in IEC 61000-4-2
ESD Test Conditions
ESD performance depends on a variety of conditions.
Contact Maxim for a reliability report that documents
test setup, test methodology, and test results.
Human Body Model
Figure 10a shows the Human Body Model, and Figure
10b shows the current waveform it generates when discharged into a low impedance. This model consists of a
100pF capacitor charged to the ESD voltage of interest,
which is then discharged into the test device through a
1.5kΩ resistor.
IEC 61000-4-2
The IEC 61000-4-2 standard covers ESD testing and
performance of finished equipment. However, it does
not specifically refer to integrated circuits. The
MAX13080E family of devices helps you design equipment to meet IEC 61000-4-2, without the need for additional ESD-protection components.
Maxim Integrated
MAX13080E–MAX13084E/
MAX13086E–MAX13089E
+5.0V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
RC
1MΩ
CHARGE-CURRENTLIMIT RESISTOR
HIGHVOLTAGE
DC
SOURCE
Cs
100pF
RD
1500Ω
RC
50MΩ TO 100MΩ
DISCHARGE
RESISTANCE
CHARGE-CURRENTLIMIT RESISTOR
DEVICE
UNDER
TEST
STORAGE
CAPACITOR
Figure 10a. Human Body ESD Test Model
IP 100%
90%
Cs
150pF
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
DEVICE
UNDER
TEST
Figure 10c. IEC 61000-4-2 ESD Test Model
I
100%
90%
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
IPEAK
Ir
HIGHVOLTAGE
DC
SOURCE
RD
330Ω
AMPS
36.8%
10%
0
10%
0
tRL
TIME
tDL
CURRENT WAVEFORM
Figure 10b. Human Body Current Waveform
The major difference between tests done using the
Human Body Model and IEC 61000-4-2 is higher peak
current in IEC 61000-4-2 because series resistance is
lower in the IEC 61000-4-2 model. Hence, the ESD withstand voltage measured to IEC 61000-4-2 is generally
lower than that measured using the Human Body Model.
Figure 10c shows the IEC 61000-4-2 model, and Figure
10d shows the current waveform for IEC 61000-4-2 ESD
Contact Discharge test.
Machine Model
The machine model for ESD tests all pins using a
200pF storage capacitor and zero discharge resistance. The objective is to emulate the stress caused
when I/O pins are contacted by handling equipment
during test and assembly. Of course, all pins require
this protection, not just RS-485 inputs and outputs.
Maxim Integrated
tr = 0.7ns TO 1ns
t
30ns
60ns
Figure 10d. IEC 61000-4-2 ESD Generator Current Waveform
Applications Information
256 Transceivers on the Bus
The standard RS-485 receiver input impedance is 12kΩ
(1-unit load), and the standard driver can drive up to 32unit loads. The MAX13080E family of transceivers has a
1/8-unit load receiver input impedance (96kΩ), allowing
up to 256 transceivers to be connected in parallel on one
communication line. Any combination of these devices,
as well as other RS-485 transceivers with a total of 32unit loads or fewer, can be connected to the line.
Reduced EMI and Reflections
The MAX13080E/MAX13081E/MAX13082E feature
reduced slew-rate drivers that minimize EMI and
reduce reflections caused by improperly terminated
cables, allowing error-free data transmission up to
250kbps. The MAX13083E/MAX13084E offer higher driver output slew-rate limits, allowing transmit speeds up
to 500kbps. The MAX13089E with SRL = VCC or unconnected are slew-rate limited. With SRL unconnected,
the MAX13089E error-free data transmission is up to
250kbps. With SRL connected to VCC, the data transmit
speeds up to 500kbps.
17
MAX13080E–MAX13084E/
MAX13086E–MAX13089E
+5.0V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
Low-Power Shutdown Mode (Except
MAX13081E/MAX13084E/MAX13087E)
Low-power shutdown mode is initiated by bringing both
RE high and DE low. In shutdown, the devices typically
draw only 2.8µA of supply current.
RE and DE can be driven simultaneously; the devices
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 700ns, the devices are guaranteed to
enter shutdown.
Enable times t ZH and t ZL (see the Switching
Characteristics section) assume the devices were not in
a low-power shutdown state. Enable times tZH(SHDN) and
tZL(SHDN) assume the devices were in shutdown state. It
takes drivers and receivers longer to become enabled
from low-power shutdown mode (tZH(SHDN), tZL(SHDN))
than from driver/receiver-disable mode (tZH, tZL).
A
R
Line Length
The RS-485/RS-422 standard covers line lengths up to
4000ft. For line lengths greater than 4000ft, use the
repeater application shown in Figure 11.
Typical Applications
The MAX13082E/MAX13088E/MAX13089E transceivers
are designed for bidirectional data communications on
multipoint bus transmission lines. Figures 12 and 13
show typical network applications circuits.
To minimize reflections, terminate the line at both ends
in its characteristic impedance, and keep stub lengths
off the main line as short as possible. The slew-rate-limited MAX13082E and the two modes of the MAX13089E
are more tolerant of imperfect termination.
MAX13080E/MAX13081E/MAX13083E/
MAX13084E/MAX13086E/MAX13087E/
MAX13089E (FULL DUPLEX)
RO
RE
Driver Output Protection
Two mechanisms prevent excessive output current and
power dissipation caused by faults or by bus contention.
The first, a foldback current limit on the output stage,
provides immediate protection against short circuits over
the whole common-mode voltage range (see the Typical
Operating Characteristics). The second, a thermal-shutdown circuit, forces the driver outputs into a high-impedance state if the die temperature exceeds +175°C (typ).
DATA IN
B 120Ω
DE
Chip Information
Z
DI
D
PROCESS: BiCMOS
DATA OUT
Y 120Ω
Figure 11. Line Repeater for MAX13080E/MAX13081E/
MAX13083E/MAX13084E/MAX13086E/MAX13087E/MAX13089E
in Full-Duplex Mode
120Ω
120Ω
DE
B
B
DI
D
D
DI
DE
RO
A
B
A
B
A
A
R
R
RO
RE
RE
R
R
D
D
MAX13082E
MAX13088E
MAX13089E (HALF DUPLEX)
DI
DE
RO RE
DI
DE
RO RE
Figure 12. Typical Half-Duplex RS-485 Network
18
Maxim Integrated
MAX13080E–MAX13084E/
MAX13086E–MAX13089E
+5.0V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
A
R
RO
RE
DE
Y
120Ω
120Ω
D
B
DI
Z
Z
D
DI
DE
RE
RO
B
120Ω
120Ω
R
Y
A
Y
Z
B
A
Y
Z
B
R
D
DI
A
MAX13080E
MAX13081E
MAX13083E
MAX13084E
MAX13086E
MAX13087E
MAX31089E (FULL DUPLEX)
R
D
DE RE RO
DI
DE RE RO
NOTE: RE AND DE ON MAX13080E/MAX13083E/MAX13086E/MAX13089E ONLY.
Figure 13. Typical Full-Duplex RS-485 Network
Selector Guide
SLEW-RATE
LIMITED
LOW-POWER
SHUTDOWN
RECEIVER/
DRIVER
ENABLE
0.250
Yes
Yes
0.250
Yes
No
Half
0.250
Yes
Full
0.5
Yes
MAX13084E
Full
0.5
MAX13086E
Full
MAX13087E
Full
MAX13088E
MAX13089E
HALF/FULL
DUPLEX
DATA RATE
(Mbps)
MAX13080E
Full
MAX13081E
Full
MAX13082E
MAX13083E
PART
Maxim Integrated
TRANSCEIVERS
ON BUS
PINS
Yes
256
14
No
256
8
Yes
Yes
256
8
Yes
Yes
256
14
Yes
No
No
256
8
16
No
Yes
Yes
256
14
16
No
No
No
256
8
Half
16
No
Yes
Yes
256
8
Selectable
Selectable
Selectable
Yes
Yes
256
14
19
MAX13080E–MAX13084E/
MAX13086E–MAX13089E
+5.0V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
Pin Configurations and Typical Operating Circuits
VCC
DE
N.C. 1
RO
RE
0.1μF
14
4
14 VCC
2
3
12 A
DE 4
11 B
DI 5
10 Z
D
GND 6
9 Y
GND 7
8 N.C.
VCC RE
A
Y
9
5
DI
13 N.C.
R
MAX13080E
MAX13083E
MAX13086E
Rt
D
Z
12
2
RO
N.C.
B
Y
A
Rt
R
DI
D
11
B
1, 8, 13
RO
R
10
Z
GND
6, 7
3
GND DE
RE
TYPICAL FULL-DUPLEX OPERATING CIRCUIT
DIP/SO
0.1μF
MAX13081E
MAX13084E
MAX13087E
VCC 1
VCC 1
8
A
RO 2
7
B
DI 3
6
Z
5
Y
R
D
GND 4
5
3
DI
VCC
A
Y
Rt
D
Z
8
2
RO
B
Y
A
Rt
R
DI
D
7
B
DIP/SO
RO
R
6
Z
GND
4
GND
TYPICAL FULL-DUPLEX OPERATING CIRCUIT
0.1μF
RO 1
8
R
VCC
RO
RE 2
7
B
RE
DE 3
6
A
DE
5
GND
DI
DI 4
D
1
R
8
2
7
3
6
4
MAX13082E
MAX13088E
VCC
A
5
DI
D
B
B
Rt
D
DE
Rt
A
GND
RO
R
RE
DIP/SO
TYPICAL HALF-DUPLEX OPERATING CIRCUIT
NOTE: PIN LABELS Y AND Z ON TIMING, TEST, AND WAVEFORMS DIAGRAMS.
SEE PINS A AND B WHEN DE IS HIGH.
20
Maxim Integrated
MAX13080E–MAX13084E/
MAX13086E–MAX13089E
+5.0V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
Pin Configurations and Typical Operating Circuits (continued)
VCC
RE
MAX13089E
A
RO
TOP VIEW
H/F 1
14 VCC
RO 2
13 RXP
RE 3
DE 4
B
RXP
12 A
MAX13089E
DI 5
11 B
10 Z
SRL 6
9 Y
GND 7
8 TXP
H/F
Z
TXP
Y
DIP/SO
DI
NOTE: SWITCH POSITIONS
INDICATED FOR H/F = GND.
GND
Maxim Integrated
DE
SRL
21
MAX13080E–MAX13084E/
MAX13086E–MAX13089E
+5.0V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
Ordering Information (continued)
PART
TEMP RANGE
PIN-PACKAGE
PART
TEMP RANGE
PIN-PACKAGE
MAX13081ECPA+
0°C to +70°C
8 PDIP
MAX13086ECPD+
0°C to +70°C
14 PDIP
MAX13081ECSA+
0°C to +70°C
8 SO
MAX13086ECSD+
0°C to +70°C
14 SO
MAX13081EEPA+
-40°C to +85°C
8 PDIP
MAX13086EEPD+
-40°C to +85°C
MAX13081EESA+
-40°C to +85°C
8 SO
MAX13086EESD+
-40°C to +85°C
14 SO
MAX13081EAPA+
-40°C to +125°C
8 PDIP
MAX13086EAPD+
-40°C to +125°C
14 PDIP
MAX13081EASA+
-40°C to +125°C
8 SO
MAX13086EASD+
-40°C to +125°C
14 SO
MAX13082ECPA+
0°C to +70°C
8 PDIP
MAX13087ECPA+
0°C to +70°C
8 PDIP
MAX13082ECSA+
0°C to +70°C
8 SO
MAX13087ECSA+
0°C to +70°C
8 SO
MAX13082EEPA+
-40°C to +85°C
8 PDIP
MAX13087EEPA+
-40°C to +85°C
8 PDIP
MAX13082EESA+
-40°C to +85°C
8 SO
MAX13087EESA+
-40°C to +85°C
8 SO
MAX13082EAPA+
-40°C to +125°C
8 PDIP
MAX13087EAPA+
-40°C to +125°C
8 PDIP
MAX13082EASA+
-40°C to +125°C
8 SO
MAX13087EASA+
-40°C to +125°C
8 SO
MAX13083ECPD+
0°C to +70°C
14 PDIP
MAX13088ECPA+
0°C to +70°C
8 PDIP
MAX13083ECSD+
0°C to +70°C
14 SO
MAX13088ECSA+
0°C to +70°C
8 SO
MAX13083EEPD+
-40°C to +85°C
14 PDIP
MAX13088EEPA+
-40°C to +85°C
8 PDIP
MAX13083EESD+
-40°C to +85°C
14 SO
MAX13088EESA+
-40°C to +85°C
8 SO
MAX13083EAPD+
-40°C to +125°C
14 PDIP
MAX13088EAPA+
-40°C to +125°C
8 PDIP
MAX13083EASD+
-40°C to +125°C
14 SO
MAX13088EASA+
-40°C to +125°C
MAX13084ECPA+
0°C to +70°C
8 PDIP
MAX13089ECPD+
0°C to +70°C
14 PDIP
MAX13084ECSA+
0°C to +70°C
8 SO
MAX13089ECSD+
0°C to +70°C
14 SO
MAX13084EEPA+
-40°C to +85°C
8 PDIP
MAX13089EEPD+
-40°C to +85°C
14 PDIP
-40°C to +85°C
8 SO
MAX13089EESD+
-40°C to +85°C
14 SO
MAX13089EAPD+
-40°C to +125°C
14 PDIP
MAX13089EASD+
-40°C to +125°C
14 SO
MAX13084EESA+
8 PDIP
-40°C to +125°C
8 SO
MAX13084EASA+
-40°C to +125°C
+Denotes a lead(Pb)-free/RoHS-compliant package.
MAX13084EAPA+
22
14 PDIP
8 SO
Maxim Integrated
MAX13080E–MAX13084E/
MAX13086E–MAX13089E
+5.0V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
Package Information
For the latest package outline information and land patterns (footprints), go to www.maxim-ic.com/packages. Note that a “+”, “#”, or
“-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.
PACKAGE TYPE
PACKAGE CODE
OUTLINE NO.
LAND PATTERN NO.
8 PDIP
P8+2
21-0043
—
90-0096
8 SO
S8+4
21-0041
14 PDIP
P14+3
21-0043
—
14 SO
S14+1
21-0041
90-0112
Maxim Integrated
23
MAX13080E–MAX13084E/
MAX13086E–MAX13089E
+5.0V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
Revision History
REVISION
NUMBER
REVISION
DATE
2
11/11
DESCRIPTION
Deleted all reference to the MAX13085E
PAGES
CHANGED
1, 2, 3, 5, 12. 13, 14,
15, 16, 17, 18, 19,
20, 22
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.
24
© Maxim Integrated
Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000
The Maxim logo and Maxim Integrated are trademarks of Maxim Integrated Products, Inc.
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