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Product Detailed Parameters
- Description：IC TRANSCEIVER FULL 1/1 14SOIC
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tube
- Series：-
- Type：Transceiver
- Protocol：RS422, RS485
- Number of Drivers/Receivers：1月1日
- Duplex：Full
- Data Rate：16Mbps
- Voltage - Supply：3V ~ 3.6V
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：14-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：14-SOIC
- Receiver Hysteresis：100 mV
- Grade：-
- Qualification：-
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Overview
The MAX3079EESD+ is a +3.3V, ±15kV ESD-protected RS-485 transceiver featuring one driver and one receiver in a 14-pin SOIC package. It supports selectable half-duplex or full-duplex operation via the H/F pin. The device offers pin-selectable data rates of 250kbps, 500kbps, and 16Mbps controlled by the SRL pin. Supply current is 800μA typical, with shutdown current at 10μA maximum. Operating temperature range is -40°C to +85°C.
Feature Summary
- Pin-selectable half-duplex or full-duplex communication modes
- Slew-rate-limited drivers for error-free transmission up to 16Mbps
- Hot-swap capability on DE and RE inputs to prevent bus contention
- Independent phase control pins for twisted-pair reversal correction
Applications
- Industrial Control Systems
- Telecommunications Equipment
- Security Systems
- Lighting Systems
- Instrumentation
Procurement Notes
Verify the specific suffix 'EESD+' corresponds to the required 14-pin SOIC package and industrial temperature grade (-40°C to +85°C). Confirm that the ordering information matches the exact datasheet revision requirements for your design implementation.
Selection Notes
Select this component when flexible duplex mode and variable slew rates are required within a single package. Ensure the application utilizes three-state drivers for the SRL pin to properly configure the desired data rate between 250kbps, 500kbps, and 16Mbps.
Part Context
This part belongs to the MAX3070E–MAX3079E family of high-speed RS-485/RS-422 transceivers. Unlike fixed-function variants, the MAX3079E provides unique configurability for both communication direction and signal slew rate through dedicated external control pins.
Replacement Considerations
Direct replacements include other members of the MAX3070E–MAX3079E series such as the MAX3070EESD+, MAX3073EESD+, or MAX3076EESD+. Note that these alternatives lack the configurable duplex and slew-rate features of the MAX3079E.
FAQ
How is the data rate configured on the MAX3079E?
The data rate is set via the SRL pin: leave unconnected for 250kbps, connect to VCC for 500kbps, or connect to GND for 16Mbps.
Can the MAX3079E operate in both half-duplex and full-duplex modes?
Yes, the H/F pin selects the mode; drive it low or leave unconnected for full-duplex, or drive it high for half-duplex.
What is the purpose of the TXP and RXP pins?
These pins allow independent inversion of the transmitter and receiver phases to correct for reversed twisted-pair wiring connections.
