MAX251ESD+

Overview

The MAX251ESD+ is a low-power, single-supply RS-485 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 3V to 5.5V and supports data rates up to 10Mbps. The device features a shutdown mode that reduces power consumption to less than 0.5µW. It includes thermal shutdown protection for the driver output stage and an internal pull-down resistor on the receiver input to ensure a known state during idle conditions.

Feature Summary

• Single-supply operation compatible with standard logic levels
• Shutdown mode for significant power reduction
• Thermal protection for the driver output stage
• Internal pull-down resistor on the receiver input

Applications

• Industrial communication networks
• Building automation systems
• Data acquisition systems

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and specific package markings against official datasheets. Ensure storage conditions meet moisture sensitivity level requirements prior to assembly.

Selection Notes

Select this component for applications requiring full-duplex RS-485 communication over short distances. Consider the operating temperature range and supply voltage compatibility with the system design. Evaluate the need for shutdown functionality to manage power budgets effectively in battery-operated devices.

Part Context

This part belongs to the MAX250/MAX251 family of low-power RS-485/RS-422 transceivers. It shares functional similarities with other Maxim integrated circuits designed for serial communication interfaces, offering robust performance in electrically noisy environments while maintaining low power consumption.

Replacement Considerations

Direct substitutes include the MAX250EID+ for half-duplex variants or other RS-485 transceivers from the same manufacturer series. Verify pinout compatibility and electrical specifications before implementation.