MAX3074EESA+

Overview

The MAX3074EESA+ is a full-duplex RS-485 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It features one driver and one receiver operating from a single 3V to 3.6V supply. The device supports data transmission rates up to 500kbps with slew-rate-limited drivers to minimize EMI. It includes fail-safe circuitry that guarantees a logic-high receiver output when inputs are open or shorted, and ±15kV ESD protection on I/O pins. The component operates within an industrial temperature range of -40°C to +125°C and is housed in an 8-SOIC package.

Feature Summary

• Fail-safe receiver circuitry ensures a logic-high output during input disconnection or bus contention.
• Hot-swap capability prevents false transitions and erroneous data transfer during board insertion into powered backplanes.
• Slew-rate-limited drivers reduce signal reflections and electromagnetic interference for reliable communication.

Applications

• Industrial control systems
• Telecommunications equipment
• Security systems

Procurement Notes

Verify the specific suffix 'EESA+' against official documentation to confirm the extended temperature rating (-40°C to +125°C) and SOIC packaging. Confirm RoHS compliance status directly with the manufacturer or authorized distributors. Ensure the ordering part number matches the exact functional requirements for full-duplex RS-485 applications before procurement.

Selection Notes

Select this component for full-duplex RS-485 networks requiring operation up to 500kbps. It is suitable for environments demanding high noise immunity and robust ESD protection. Verify that the system power supply remains within the 3V to 3.6V range. Consider alternative models if half-duplex operation or higher data rates exceeding 500kbps are required.

Part Context

The MAX3074EESA+ belongs to the MAX3070E–MAX3079E family of +3.3V RS-485 transceivers. This series provides various data rate options and duplex configurations. The MAX3074 variant specifically targets full-duplex applications with moderate speed requirements, distinguishing it from half-duplex models like the MAX3072E or high-speed variants like the MAX3077E.

Replacement Considerations

The MAX3074EASA+ serves as a pin-compatible replacement offering an extended temperature range compared to the standard commercial grade version.