MAX481MSA/PR+

Overview

The MAX481MSA/PR+ is a half-duplex RS-485 and RS-422 transceiver manufactured by Analog Devices Inc. (Maxim Integrated). It integrates one driver and one receiver within an 8-pin SOIC package. The device supports data transmission rates up to 2.5Mbps with unrestricted slew rates. It operates on a single 5V supply, drawing between 120µA and 500µA in active mode and 0.1µA in shutdown mode. Key electrical parameters include a differential output voltage of 1.5V to 5V, short-circuit current limits of 35mA to 250mA, and propagation delays ranging from 20ns to 90ns.

Feature Summary

• Low-power operation with dedicated shutdown mode for minimal standby consumption
• Integrated thermal shutdown and foldback current limiting for driver protection
• Fail-safe receiver input guarantees logic-high output during open-circuit conditions

Applications

• Low-Power RS-485 Transceivers
• Low-Power RS-422 Transceivers
• Industrial-Control Local Area Networks

Procurement Notes

Verify the specific suffix 'MSA/PR+' against official documentation to confirm package type and reel specifications. Ensure compatibility with required operating temperature ranges and RoHS compliance standards before procurement.

Selection Notes

Select this component for applications requiring high-speed data rates up to 2.5Mbps where unrestricted slew rates are necessary. It is suitable for half-duplex communication systems needing low quiescent current and robust fault protection mechanisms.

Part Context

This part belongs to the MAX481/MAX483/MAX485/MAX487–MAX491/MAX1487 family of low-power transceivers designed for RS-485 and RS-422 communications. The MAX481 variant specifically offers unrestricted driver slew rates compared to slew-rate-limited siblings like the MAX483.

Replacement Considerations

Public confirmed substitutes include MAX481ESA and MAX481CSA. Verify pinout compatibility and electrical characteristics when substituting.