MAX3089EPD+

Overview

The MAX3089EPD+ is a half-duplex RS-422/RS-485 transceiver manufactured by Analog Devices Inc. It operates with a single 5V supply and supports data rates up to 10 Mbps. The device features fail-safe circuitry to ensure a high logic state at the receiver input when the bus is idle or disconnected. It includes 15kV ESD protection on both the bus and I/O pins, enhancing reliability in harsh environments. Packaged in a 14-pin PDIP, it is designed for industrial applications requiring robust communication interfaces.

Feature Summary

• Fail-safe receiver design ensures a defined high logic state during idle or fault conditions
• High electromagnetic immunity and 15kV ESD protection on bus and I/O lines
• Low power consumption suitable for battery-operated systems

Applications

• Industrial automation control networks
• Building automation and security systems
• Metering equipment communication buses

Procurement Notes

Verify the package type matches the required footprint, as the EPD suffix indicates a 14-pin PDIP. Confirm RoHS compliance status through official manufacturer documentation before integration. Ensure the operating temperature range meets the specific environmental requirements of the target application.

Selection Notes

Select this component for half-duplex RS-485/RS-422 applications requiring moderate speed and high noise immunity. Compare against full-duplex variants if simultaneous bidirectional communication is necessary. Consider the PDIP package constraints regarding PCB space and thermal dissipation capabilities relative to surface-mount alternatives.

Part Context

This part belongs to the MAX308x series of low-power RS-422/RS-485 transceivers. It shares functional similarities with the MAX3088 and MAX3089EESD+, differing primarily in package style and specific electrical tolerances. The series is widely used in legacy and new industrial designs requiring reliable serial communication.

Replacement Considerations

Direct pin-compatible replacements include other MAX3089 variants such as MAX3089EESD+ (SOIC package) or MAX3089CSD+. Verify voltage levels and package dimensions before substitution.