MAX33071EASA+

Overview

The MAX33071EASA+ is a half-duplex RS-485/RS-422 transceiver from Analog Devices. It supports data rates up to 2Mbps and operates on a supply voltage range of 3V to 5.5V. The device features ±65V fault protection, ±40V common-mode range, and ±40kV ESD protection on A/B pins. It includes one driver and one receiver with a true fail-safe feature. Operating temperature spans -40°C to +125°C. Supply current is 6mA typical, reducing to 4μA in shutdown mode.

Feature Summary

• Integrated ±65V fault protection for robust communication in harsh industrial environments
• High ESD protection capability with ±40kV HBM rating on data lines
• True fail-safe receiver guarantees logic-high output when inputs are open or shorted
• Hot-swap input structure prevents false transitions during power-up or insertion

Applications

• Industrial automation equipment
• Home and building automation systems
• Power supply and UPS units
• Elevator control networks
• Motion controllers

Procurement Notes

Verify the component against official datasheet specifications before integration. Confirm package type matches design requirements. Ensure environmental ratings align with operational conditions. Check for RoHS compliance status if required by project standards. Validate pin configuration compatibility with existing PCB layouts.

Selection Notes

Select this model for applications requiring high-speed RS-485 communication up to 2Mbps. Choose over MAX33070E if higher bandwidth is needed. Consider MAX33074E for speeds up to 20Mbps. Ensure system ground differences do not exceed ±40V common-mode limits. Verify thermal management meets junction temperature constraints.

Part Context

Part of the MAX33070E/MAX33071E/MAX33074E family designed for fault-protected RS-485/RS-422 interfaces. Shares similar packaging and basic functionality with variants differing primarily in maximum data rate capabilities. Designed for use in electrically noisy environments where standard transceivers may fail due to overvoltage or ESD events.

Replacement Considerations

MAX33070E offers lower speed (500kbps) but same protection. MAX33074E provides higher speed (20Mbps). Direct functional substitutes within the same family maintain pinout compatibility. Verify thermal performance differences between SO and SO-EP packages if heat dissipation is critical.