MAX489EESD+

Drivers, Receivers, Transceivers Overview

The MAX489EESD+ is a low-power, full-duplex RS-422/RS-485 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It integrates one driver and one receiver within a 14-pin SOIC package. The device operates from a single +5V supply (4.75V to 5.25V) with a typical no-load supply current of 120µA. It supports data rates up to 250kbps and features slew-rate-limited drivers to minimize EMI. Key electrical characteristics include ±15kV ESD protection on all pins, thermal shutdown for the driver, short-circuit current limiting, and a fail-safe receiver input that guarantees a logic-high output when the input is open.

Drivers, Receivers, Transceivers Feature Summary

• Full-duplex communication capability with independent driver and receiver enable controls
• Slew-rate-limited drivers designed to reduce electromagnetic interference and signal reflections
• Robust protection against electrostatic discharge shocks up to ±15kV without latchup
• Fail-safe receiver input ensures a high logic state if the differential input lines are disconnected

Drivers, Receivers, Transceivers Applications

• Low-power RS-422 communications in harsh environments
• Industrial-control local area networks
• Transceivers for applications sensitive to electromagnetic interference

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix to confirm the package type and temperature range. The 'EE' suffix indicates an extended temperature range (-40°C to +85°C) and an SOIC package. Ensure compatibility with system voltage requirements, as this component is strictly designed for +5V operation. Cross-reference the manufacturer's latest documentation for any updates regarding lead-free status or environmental compliance before finalizing procurement.

Drivers, Receivers, Transceivers Selection Notes

Select the MAX489EESD+ when full-duplex operation is required alongside low power consumption. Unlike half-duplex variants, this model allows simultaneous transmission and reception. The slew-rate limitation makes it suitable for longer cable runs or noisy environments where signal integrity is critical. Verify that the application does not require higher data rates exceeding 250kbps, as faster transceivers in the family offer different performance trade-offs.

Drivers, Receivers, Transceivers Part Context

This component belongs to the MAX48xE series of low-power transceivers designed for RS-485 and RS-422 standards. The 'E' designation signifies enhanced electrostatic discharge protection compared to non-E versions. The MAX489E variant specifically provides full-duplex functionality, distinguishing it from the half-duplex MAX485E and MAX483E models within the same product family.

Drivers, Receivers, Transceivers Replacement Considerations

The ADM489ABRZ from Analog Devices serves as a functional replacement offering similar full-duplex RS-485 capabilities. Both devices operate at 250kbps with ±15kV ESD protection and utilize a 14-pin SOIC package. Verify pinout compatibility and ensure the alternative meets the specific thermal and electrical requirements of the existing design.