MAX3082EPA+

Overview

The MAX3082EPA+ is a half-duplex RS-485/RS-422 transceiver in an 8-pin PDIP package. It features one driver and one receiver with fail-safe circuitry that guarantees a logic-high receiver output when inputs are open or shorted. The device supports data rates up to 115kbps via slew-rate-limited drivers, which minimize EMI and reflections. It operates on a single +5V supply (4.75V to 5.25V) with a typical quiescent current of 375µA. The receiver input impedance is 1/8-unit-load, allowing up to 256 transceivers on the bus.

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
• 1/8-unit-load receiver input impedance supports high node density on the bus

Applications

• RS-422/RS-485 communications
• EMI-sensitive applications
• Industrial-control local area networks

Procurement Notes

Verify the component against official Analog Devices documentation to confirm pinout compatibility and electrical specifications. Ensure the operating temperature range meets system requirements. Cross-reference the ordering information to validate the specific suffix for the desired package and temperature grade before procurement.

Selection Notes

Select this component for half-duplex RS-485 or RS-422 applications requiring low power consumption and reduced EMI. It is suitable for systems needing fail-safe behavior and support for multiple nodes on a single bus line. Consider the 115kbps maximum data rate constraint when designing high-speed communication links.

Part Context

The MAX3082EPA+ belongs to the MAX3080–MAX3089 family of high-speed transceivers designed for RS-485/RS-422 communication. This series includes variants supporting different data rates and duplex modes. The MAX3082 specifically provides half-duplex operation with slew-rate limiting for improved signal integrity in noisy environments.

Replacement Considerations

The datasheet notes that the MAX3082 is pin-compatible with the industry-standard 75176 device.