ADM485EAR
Overview
The ADM485EAR is a 5 V, half-duplex RS-422/RS-485 transceiver in an 8-pin SOIC package. It provides one driver and one receiver with 70 mV receiver hysteresis and supports data rates up to 2.5 Mbps. The device is specified for 4.75 V to 5.25 V supply and industrial temperature operation (-40 to 85 C).
Why Choose This Part
The ADM485EAR is a direct drop-in option for 5 V legacy systems thanks to its standard 8-SOIC pinout and 5 V supply range. Its 70 mV receiver hysteresis and 2.5 Mbps capability make it suitable for noisy environments and higher-speed RS-485/RS-422 links. Wide industrial temperature rating and common SOIC packaging simplify replacement and PCB redesigns.
Applications
Key Specifications
Getting Started
No special development board is required - wire the transceiver between your MCU UART and the differential A/B pair, and control the DE/RE direction pins from a GPIO. Follow standard RS-485 practice: place 120 ohm termination at line ends, provide fail-safe biasing or pull resistors as needed, tie signal and chassis grounds appropriately, and add transient protection for harsh environments.
ADM485 Family
Comparing specs that differ across variants. The current part is highlighted.
| Part Number | Data Rate | Stock |
|---|---|---|
| ADM485EAR (this part) | 2.5M | 7,099 |
| ADM485ARZ | 5M | 13,160 |
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