MAX3080EPD+

Overview

The MAX3080EPD+ is a full-duplex RS-485/RS-422 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It integrates one driver and one receiver within a 14-pin Plastic DIP package, operating across an industrial temperature range of -40°C to +85°C. The device supports data transmission rates up to 115kbps with slew-rate-limited drivers to minimize electromagnetic interference. It operates on a single +5V supply (4.75V to 5.25V) with a typical quiescent current of 375µA. Key electrical characteristics include a 1/8-unit-load receiver input impedance, allowing up to 256 devices on the bus, and fail-safe circuitry that guarantees a logic-high receiver output when inputs are open or shorted.

Feature Summary

• Fail-safe circuitry ensures a logic-high receiver output during idle or fault conditions
• Slew-rate-limited drivers reduce electromagnetic interference and signal reflections
• High input impedance allows connection of up to 256 transceivers on a single bus

Applications

• RS-422 and RS-485 communication networks
• Industrial control local area networks
• Level translation applications in EMI-sensitive environments

Procurement Notes

Verify the specific ordering suffix EPD confirms the 14-pin Plastic DIP package and the E-grade industrial temperature rating (-40°C to +85°C). Confirm compliance with RoHS directives as indicated in official documentation. Ensure compatibility with standard RS-485/RS-422 bus topologies requiring full-duplex operation and low-power shutdown capabilities.

Selection Notes

Select this component for designs requiring full-duplex communication with reduced electromagnetic emissions. The MAX3080EPD+ is suitable for systems needing high noise immunity through fail-safe thresholds and support for extensive bus networks due to its 1/8-unit-load receiver impedance. Consider thermal dissipation requirements if operating near maximum power limits.

Part Context

This part belongs to the MAX3080–MAX3089 family of high-speed transceivers designed for RS-485/RS-422 standards. While other variants in the series offer half-duplex modes or higher speed capabilities up to 10Mbps, the MAX3080 specifically provides full-duplex operation with fixed 115kbps slew-rate limiting. It serves as a robust interface solution for industrial automation and building control systems.

Replacement Considerations

The datasheet notes pin-compatibility with the industry-standard 75180 transceiver. Designers replacing legacy 75180 components should verify that the additional features of the MAX3080, such as the specific fail-safe thresholds and shutdown controls, align with the existing system requirements.