MAX3072E ,+3.3V, ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversApplicationsMAX3071EEPA -40°C to +85°C 8 Plastic DIPLighting SystemsMAX3071EESA -40°C to +85°C 8 SO ..
MAX3072EAPA ,+3.3V / 15kV ESD-Protected / Fail-Safe / Hot-Swap / RS-485/RS-422 TransceiversELECTRICAL CHARACTERISTICS(V = 3.3V ±10%, T =T to T , unless otherwise noted. Typical values are at ..
MAX3072EASA+ ,+3.3V, ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversELECTRICAL CHARACTERISTICS(V = 3.3V ±10%, T =T to T , unless otherwise noted. Typical values are at ..
MAX3072EEPA ,+3.3V / 15kV ESD-Protected / Fail-Safe / Hot-Swap / RS-485/RS-422 TransceiversMAX3070E–MAX3079E19-2668; Rev 1; 1/03+3.3V, ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 ..
MAX3072EESA ,+3.3V / 15kV ESD-Protected / Fail-Safe / Hot-Swap / RS-485/RS-422 Transceiversfeatures independently programmablereceiver and transmitter output phase through separate pins.The ..
MAX3072EESA ,+3.3V / 15kV ESD-Protected / Fail-Safe / Hot-Swap / RS-485/RS-422 TransceiversELECTRICAL CHARACTERISTICS(V = 3.3V ±10%, T =T to T , unless otherwise noted. Typical values are at ..
MAX6303CSA ,+5V, Low-Power uP Supervisory Circuits with Adjustable Reset/WatchdogFeaturesThe MAX6301/MAX6302/MAX6303/MAX6304* low- ' Adjustable Reset Thresholdpower microprocessor ..
MAX6303CSA ,+5V, Low-Power uP Supervisory Circuits with Adjustable Reset/WatchdogMAX6301–MAX6304 19-1078; Rev 0; 6/96+5V, Low-Power µP Supervisory Circuits with Adjustable Reset/Wa ..
MAX6303CSA+ ,+5V, Low-Power, µP Supervisory Circuits with Adjustable Reset/WatchdogGeneral Description ________
MAX6303CSA+T ,+5V, Low-Power, µP Supervisory Circuits with Adjustable Reset/WatchdogFeaturesThe MAX6301–MAX6304* low-power microprocessor♦ Adjustable Reset Threshold(µP) supervisory c ..
MAX6303CSA-T ,+5V, Low-Power, µP Supervisory Circuits with Adjustable Reset/WatchdogELECTRICAL CHARACTERISTICS(V = +2V to +5.5V, T = T to T , unless otherwise noted. Typical values ar ..
MAX6303CUA ,+5V, Low-Power uP Supervisory Circuits with Adjustable Reset/WatchdogELECTRICAL CHARACTERISTICS(V = +2V to +5.5V, T = T to T , unless otherwise noted. Typical values ar ..
MAX3072E
+3.3V, ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers
General DescriptionThe MAX3070E–MAX3079E 3.3V, ±15kV ESD-protected,
RS-485/RS-422 transceivers feature one driver and one
receiver. These devices include fail-safe circuitry, guar-
anteeing a logic-high receiver output when receiver
inputs are open or shorted. The receiver outputs a logic
high if all transmitters on a terminated bus are disabled
(high impedance). The MAX3070E–MAX3079E include a
hot-swap capability to eliminate false transitions on the
bus during power-up or hot insertion.
The MAX3070E/MAX3071E/MAX3072E feature reduced
slew-rate drivers that minimize EMI and reduce reflec-
tions caused by improperly terminated cables, allowing
error-free data transmission up to 250kbps. The
MAX3073E/MAX3074E/MAX3075E also feature slew-
rate-limited drivers but allow transmit speeds up to
500kbps. The MAX3076E/MAX3077E/MAX3078E driver
slew rates are not limited, making transmit speeds up to
16Mbps possible. The MAX3079E slew rate is pin
selectable for 250kbps, 500kbps, and 16Mbps.
The MAX3072E/MAX3075E/MAX3078E are intended for
half-duplex communications, and the MAX3070E/
MAX3071E/MAX3073E/MAX3074E/MAX3076E/MAX307
7E are intended for full-duplex communications. The
MAX3079E is selectable for half-duplex or full-duplex
operation. It also features independently programmable
receiver and transmitter output phase through
separate pins.
The MAX3070E–MAX3079E transceivers draw 800µA
of supply current when unloaded or when 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.
ApplicationsLighting Systems
Industrial Control
Telecom
Security Systems
Instrumentation
Features3.3V OperationElectrostatic Discharge (ESD) Protection for
RS-485 I/O Pins
±15kV Human Body ModelTrue Fail-Safe Receiver While Maintaining
EIA/TIA-485 Compatibility Hot-Swap Input Structure on DE and REEnhanced Slew-Rate Limiting Facilitates Error-
Free Data Transmission
(MAX3070E–MAX3075E/MAX3079E)Low-Current Shutdown Mode (Except
MAX3071E/MAX3074E/MAX3077E)Pin-Selectable Full-/Half-Duplex Operation
(MAX3079E)Phase Controls to Correct for Twisted-Pair
Reversal (MAX3079E)Allow Up to 256 Transceivers on the BusAvailable in Industry-Standard 8-Pin SO Package
MAX3070E–MAX3079E
+3.3V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
Ordering Information19-2668; Rev 1; 1/03
Selector Guide, Pin Configurations, and Typical Operating
Circuits appear at end of data sheet.
Ordering Information continued at end of data sheet.
MAX3070E–MAX3079E
+3.3V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICSStresses 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.
(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
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
MAX307_EE_ _................................................-40°C to +85°C
MAX307_EA_ _..............................................-40°C to +125°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
MAX3070E–MAX3079E
+3.3V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
DC ELECTRICAL CHARACTERISTICS (continued)
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:∆VODand ∆VOCare the changes in VODand 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 out-
put current applies during current limiting to allow a recovery from bus contention.
MAX3070E–MAX3079E
+3.3V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
DRIVER SWITCHING CHARACTERISTICS
MAX3070E/MAX3071E/MAX3072E/MAX3079E with SRL = UNCONNECTED (250kbps)
RECEIVER SWITCHING CHARACTERISTICS
MAX3070E/MAX3071E/MAX3072E/MAX3079E with SRL = UNCONNECTED (250kbps)(VCC= 3.3V ±10%, TA= TMINto TMAX, unless otherwise noted. Typical values are at VCC= 3.3V and TA= +25°C.)
MAX3070E–MAX3079E
+3.3V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
DRIVER SWITCHING CHARACTERISTICS
MAX3073E/MAX3074E/MAX3075E/MAX3079E with SRL = VCC(500kbps)
RECEIVER SWITCHING CHARACTERISTICS
MAX3073E/MAX3074E/MAX3075E/MAX3079E with SRL = VCC(500kbps)
MAX3070E–MAX3079E
+3.3V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
DRIVER SWITCHING CHARACTERISTICS
MAX3076E/MAX3077E/MAX3078E/MAX3079E with SRL = GND (16Mbps)
RECEIVER SWITCHING CHARACTERISTICS
MAX3076E/MAX3077E/MAX3078E/MAX3079E with SRL = GND (16Mbps)
MAX3070E–MAX3079E
+3.3V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
SUPPLY CURRENT vs. TEMPERATUREMAX3070E toc01
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
OUTPUT CURRENT
vs. RECEIVER OUTPUT HIGH VOLTAGE
MAX3070E toc02
OUTPUT HIGH VOLTAGE (V)
OUTPUT CURRENT (mA)
OUTPUT CURRENT
vs. RECEIVER OUTPUT LOW VOLTAGE
MAX3070E toc03
OUTPUT HIGH VOLTAGE (V)
OUTPUT CURRENT (mA)
RECEIVER OUTPUT HIGH VOLTAGE
vs. TEMPERATURE
MAX3070E toc04
TEMPERATURE (°C)
OUTPUT HIGH VOLTAGE (V)
RECEIVER OUTPUT LOW VOLTAGE
vs. TEMPERATURE
MAX3070E toc05
TEMPERATURE (°C)
OUTPUT LOW VOLTAGE (V)
DRIVER OUTPUT CURRENT
vs. DIFFERENTIAL OUTPUT VOLTAGE
MAX3070E toc06
DIFFERENTIAL OUTPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
DRIVER DIFFERENTIAL OUTPUT VOLTAGE
vs. TEMPERATURE
XMAX3070E toc07
TEMPERATURE (°C)
DIFFERENTIAL OUTPUT VOLTAGE (V)
OUTPUT CURRENT
vs. TRANSMITTER OUTPUT HIGH VOLTAGE
MAX3070E toc08
OUTPUT HIGH VOLTAGE (V)
OUTPUT CURRENT (mA)2-6-5-4-2-10-31
OUTPUT CURRENT
vs. TRANSMITTER OUTPUT LOW VOLTAGE
MAX3070E toc09
OUTPUT LOW VOLTAGE (V)
OUTPUT CURRENT (mA)8642
Typical Operating Characteristics
(VCC= 3.3V, TA = +25°C, unless otherwise noted.)
MAX3070E–MAX3079E
+3.3V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
SHUTDOWN CURRENT
vs. TEMPERATUREMAX3070E toc10
TEMPERATURE (°C)
SHUTDOWN CURRENT (
DRIVER PROPAGATION DELAY
vs. TEMPERATURE (250kbps)
MAX3070E toc11
TEMPERATURE (°C)
DRIVER PROPAGATION DELAY (ns)
DRIVER PROPAGATION DELAY
vs. TEMPERATURE (500kbps)
MAX3070E toc12
TEMPERATURE (°C)
DRIVER PROPAGATION DELAY (ns)
DRIVER PROPAGATION DELAY
vs. TEMPERATURE (16Mbps)
MAX3070E toc13
TEMPERATURE (°C)
DRIVER PROPAGATION DELAY (ns)
RECEIVER PROPAGATION DELAY
vs. TEMPERATURE (250kbps AND 500kbps)
MAX3070E toc14
TEMPERATURE (°C)
DRIVER PROPAGATION DELAY (ns)
RECEIVER PROPAGATION DELAY
vs. TEMPERATURE (16Mbps)
MAX3070E toc15
TEMPERATURE (°C)
RECEIVER PROPAGATION DELAY (ns)
DRIVER PROPAGATION DELAY (250kbps)
MAX3070E toc16
1µs/div
VY - VZ
2V/div
2V/div
RECEIVER PROPAGATION DELAY
(250kbps AND 500kbps)MAX3070E toc17
200ns/div
VA - VB
1V/div
2V/div
Typical Operating Characteristics (continued)(VCC= 3.3V, TA = +25°C, unless otherwise noted.)
MAX3070E–MAX3079E
+3.3V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
Test Circuits and Waveforms
Typical Operating Characteristics (continued)(VCC= 3.3V, TA = +25°C, unless otherwise noted.)
Figure 1. Driver DC Test Load
Figure 2. Driver Timing Test Circuit
Figure 3. Driver Propagation Delays
MAX3070E–MAX3079E
+3.3V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceiversest Circuits and Waveforms (continued)Figure 4. Driver Enable and Disable Times (tDHZ, tDZH, tDZH(SHDN))
Figure 5. Driver Enable and Disable Times (tDZL, tDLZ, tDLZ(SHDN))
MAX3070E–MAX3079E
+3.3V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceiversest Circuits and Waveforms (continued)Figure 6. Receiver Propagation Delay Test Circuit
Figure 7. Receiver Propagation Delays
Figure 8. Receiver Enable and Disable Times
MAX3070E–MAX3079E
+3.3V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
MAX3070E–MAX3079E
+3.3V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
MAX3070E/MAX3073E/MAX3076E
Pin Description (continued)
MAX3071E/MAX3074E/MAX30767E
Function Tables
