MAX3074EASA

Overview

The MAX3074EASA is a full-duplex RS-485/RS-422 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It integrates one driver and one receiver in an 8-SOIC surface-mount package. The device operates on a single 3V to 3.6V supply voltage and supports data rates up to 500kbps. It features ±15kV ESD protection on all pins and fail-safe circuitry that guarantees a logic-high receiver output when inputs are open or shorted. The component functions within an extended temperature range of -40°C to +125°C.

Feature Summary

• Fail-safe receiver circuitry ensures a defined high logic state during bus idle or fault conditions
• Integrated ±15kV electrostatic discharge protection across all communication pins
• Supports simultaneous transmission and reception via full-duplex architecture

Applications

• Industrial automation control networks
• Building automation systems
• Process control instrumentation

Procurement Notes

Verify the specific suffix against the manufacturer's official datasheet to confirm pinout compatibility and electrical characteristics. Ensure the procurement channel provides traceability documentation for industrial-grade components. Confirm RoHS compliance status matches project requirements before finalizing orders.

Selection Notes

Select this component for applications requiring robust noise immunity and simple interface integration. The fixed 500kbps rate suits low-to-medium speed serial communications. Verify that the 3.3V supply rail aligns with the system power architecture. Consider the SOIC package dimensions for PCB layout constraints.

Part Context

This part belongs to the MAX3070E–MAX3079E family of 3.3V RS-485/RS-422 transceivers. These devices share common architectural features including fail-safe design and ESD protection. The MAX3074EASA specifically denotes the full-duplex variant within this series, distinguishing it from half-duplex models like the MAX3075.

Replacement Considerations

The ADM3074EYRZ serves as a verified functional substitute offering identical 500kbps full-duplex performance and 3.3V operation. Both components provide comparable ESD protection levels and fail-safe characteristics.