MAX1487EPA+

Drivers, Receivers, Transceivers Overview

The MAX1487EPA+ is a low-power, half-duplex RS-485/RS-422 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It integrates one driver and one receiver in an 8-pin Plastic DIP package. The device supports data rates up to 2.5Mbps with an uncontrolled slew rate. It operates on a single 5V supply (4.75V to 5.25V) and draws a typical quiescent current of 230µA. The receiver input impedance is 1/4 unit load (48kΩ), allowing up to 128 transceivers on the bus. It features thermal shutdown protection and fail-safe inputs.

Drivers, Receivers, Transceivers Feature Summary

• Half-duplex communication capability for bidirectional data transmission
• Quarter-unit-load receiver input impedance supporting high node counts
• Integrated thermal shutdown circuitry for output protection
• Fail-safe receiver design ensuring logic-high output during open-circuit conditions

Drivers, Receivers, Transceivers Applications

• Industrial-control local area networks
• Low-power RS-485 communication systems
• Low-power RS-422 communication systems
• Level translation applications

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'EPA+' corresponds to the -40°C to +85°C extended temperature range and Plastic DIP packaging. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors. Ensure the ordering part number matches the required pin configuration and electrical specifications before procurement.

Drivers, Receivers, Transceivers Selection Notes

Select this component for half-duplex RS-485/RS-422 applications requiring up to 2.5Mbps data rates. It is suitable for systems needing up to 128 nodes on the bus due to its 1/4 unit load receiver impedance. Choose this over slew-rate-limited variants if higher speed is prioritized over EMI reduction. Ensure the system operates within the specified 5V supply voltage range.

Drivers, Receivers, Transceivers Part Context

The MAX1487EPA+ belongs to the MAX481/MAX483/MAX485/MAX487–MAX491/MAX1487 family of low-power transceivers. Unlike the slew-rate-limited MAX487, the MAX1487 offers higher speed capabilities up to 2.5Mbps while maintaining the same quarter-unit-load receiver characteristic. It shares the same 8-pin PDIP footprint as other devices in this series.

Drivers, Receivers, Transceivers Replacement Considerations

Publicly confirmed substitutes include MAX1487ESA and MAX1487CSA from the same manufacturer. These parts share identical electrical characteristics but differ in package type (SOIC vs. Plastic DIP). Verify pin compatibility and thermal performance when substituting.