MAX3081EESA+

Overview

The MAX3081EESA+ is a full-duplex RS-422/RS-485 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +5V supply (4.75V to 5.25V) and features one driver and one receiver within an 8-pin NSOIC package. The device incorporates fail-safe circuitry that guarantees a logic-high receiver output when inputs are open or shorted. It supports data transmission rates up to 115kbps with slew-rate-limited drivers to minimize EMI. The unit draws a typical quiescent current of 600µA and provides ±15kV electrostatic discharge protection on all I/O pins.

Feature Summary

• Fail-safe receiver design ensures a logic-high output state during bus idle conditions, input shorts, or open circuits.
• Slew-rate limiting on the driver minimizes electromagnetic interference and reduces signal reflections on improperly terminated cables.
• Integrated ±15kV electrostatic discharge protection on all transmitter outputs and receiver inputs for enhanced robustness.

Applications

• RS-422 and RS-485 communication networks
• Industrial control local area networks
• EMI-sensitive applications requiring reduced signal reflections

Procurement Notes

Verify the component against official manufacturer documentation to confirm pinout compatibility and electrical specifications. Ensure the ordering suffix matches the required temperature range and packaging format. Cross-reference datasheet parameters such as supply voltage limits and data rates to validate suitability for the specific system requirements before procurement.

Selection Notes

Select this component for full-duplex applications requiring error-free transmission at speeds up to 115kbps. The integrated slew-rate limiting makes it suitable for environments where minimizing EMI is critical. Verify that the system operates within the specified 4.75V to 5.25V supply range and requires the standard 8-pin surface-mount footprint.

Part Context

This device belongs to the MAX3080E–MAX3089E family of high-speed transceivers designed for RS-485/RS-422 communication. The family includes variants supporting half-duplex operation, higher data rates up to 10Mbps, and selectable operational modes. The MAX3081E specifically addresses full-duplex needs with built-in EMI reduction capabilities.

Replacement Considerations

The MAX3081E is pin-compatible with industry-standard devices like the 75180. Direct replacements include other members of the MAX3080E series, such as the MAX3080E or MAX3083E, provided they meet the full-duplex requirement and 115kbps speed constraint.