MAX3490EESA-T

Overview

The MAX3490EESA-T is a full-duplex RS-485/RS-422 transceiver operating from a single +3.3V supply without a charge pump. It supports data rates up to 12Mbps with a typical supply current of 1.9mA. The device features ±15kV ESD protection on I/O pins and operates within an extended temperature range of -40°C to +85°C. Packaged in an 8-pin SOIC, it includes driver short-circuit current limiting and thermal shutdown for overload protection.

Feature Summary

• Full-duplex communication capability with one driver and one receiver
• Enhanced electrostatic discharge protection on all transmitter outputs and receiver inputs
• Driver overload protection via short-circuit current limiting and thermal shutdown circuitry
• Receiver input fail-safe feature ensuring logic-high output when inputs are open

Applications

• Telecommunications systems
• Industrial-control local area networks
• Integrated services digital networks
• Packet switching applications

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging configuration. Confirm the 'E' designation corresponds to the industrial temperature range of -40°C to +85°C. Ensure the component matches the 8-pin SOIC package outline. Cross-reference the manufacturer part number against official Analog Devices documentation to confirm authenticity and revision status.

Selection Notes

Select this component for full-duplex RS-485 or RS-422 applications requiring high-speed transmission up to 12Mbps. It is suitable for environments demanding robust ESD protection and low power consumption at 3.3V. Verify compatibility with +5V logic levels if interfacing with legacy systems. Consider the absence of a shutdown pin compared to half-duplex variants in the same family.

Part Context

This device belongs to the MAX3483E family of low-power transceivers designed for RS-485 and RS-422 communications. It shares the industry-standard 75176 pinout with other members of the series. The MAX3490E specifically provides full-duplex operation, distinguishing it from half-duplex counterparts like the MAX3485E.

Replacement Considerations

MAX3490EESA+ is the RoHS-compliant version of this component.