MAX251ESD

Overview

The MAX251ESD is a low-power RS-485 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It supports data rates up to 10 Mb/s and operates with a supply voltage range of 3 V to 5.5 V. The device features a shutdown mode that reduces power consumption to less than 0.5 µW. It includes thermal shutdown protection for the driver output stage and ESD protection rated at ±15 kV according to the Human Body Model. The component is housed in an 8-pin UCSP package.

Feature Summary

• Supports high-speed data transmission up to 10 Mb/s
• Provides robust ESD protection rated at ±15 kV (Human Body Model)
• Integrates thermal shutdown protection for the driver output stage
• Features a low-power shutdown mode reducing current consumption below 0.5 µW

Applications

• Industrial control systems requiring reliable serial communication
• Building automation networks utilizing RS-485 protocols
• Data acquisition systems operating in electrically noisy environments

Procurement Notes

Verify the specific ordering suffix 'ESD' against official documentation to confirm pinout compatibility and functional specifications. Ensure the selected variant matches the required package type and temperature rating for the intended application environment before finalizing procurement.

Selection Notes

Select this component when designing circuits that require high-speed RS-485 communication with strict power constraints. The integrated ESD protection and thermal shutdown simplify design requirements for harsh industrial environments. Verify that the 3 V to 5.5 V supply range aligns with the system's available power rails.

Part Context

The MAX251 belongs to the MAX250/MAX251 family of low-power RS-485/RS-422 transceivers. This series is designed for applications demanding reduced power consumption without sacrificing data integrity or transmission speed. The MAX251 specifically offers full-duplex operation capabilities within the compact UCSP package format.

Replacement Considerations

Consult official cross-reference lists for verified substitutes. Ensure any replacement maintains identical pin configurations, electrical characteristics, and package dimensions to guarantee direct interchangeability without circuit redesign.

FAQ

What is the maximum data rate supported by the MAX251ESD?

The MAX251ESD supports data rates up to 10 Mb/s.

How does the device handle over-temperature conditions?

The MAX251ESD includes thermal shutdown protection that disables the driver output stage if excessive junction temperatures are detected.

What is the ESD protection rating for this component?

The device provides ESD protection rated at ±15 kV according to the Human Body Model specification.