MAX487EPA+

Drivers, Receivers, Transceivers Overview

The MAX487EPA+ 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 PDIP package. The device supports data rates up to 250kbps with slew-rate-limited drivers to minimize EMI. It operates on a single 5V supply (4.75V to 5.25V) and features a low quiescent current of 120µA. A shutdown mode reduces current consumption to 0.1µA. The receiver input impedance is 48kΩ (1/4 unit load), allowing up to 128 transceivers on the bus. It includes thermal shutdown and short-circuit current limiting.

Drivers, Receivers, Transceivers Feature Summary

• Slew-rate-limited drivers reduce electromagnetic interference and signal reflections for error-free transmission.
• Quarter-unit-load receiver input impedance enables connection of up to 128 devices on a single bus.
• Integrated thermal shutdown and short-circuit current limiting protect against excessive power dissipation.

Drivers, Receivers, Transceivers Applications

• Low-Power RS-485 Transceivers
• Industrial-Control Local Area Networks
• Transceivers for EMI-Sensitive Applications

Drivers, Receivers, Transceivers Procurement Notes

Verify the component authenticity through official manufacturer channels or authorized distributors. Confirm the specific ordering suffix matches the required temperature range and package type. Ensure compliance with relevant environmental standards such as RoHS before finalizing procurement decisions.

Drivers, Receivers, Transceivers Selection Notes

Select this component for half-duplex applications requiring high node density due to its 1/4 unit load receiver impedance. It is suitable for systems where minimizing electromagnetic interference is critical, thanks to the slew-rate-limited driver. Ensure the design accommodates the 5V single-supply requirement and utilizes the shutdown feature for low-power standby modes.

Drivers, Receivers, Transceivers Part Context

The MAX487EPA+ belongs to the MAX481/MAX483/MAX485/MAX487–MAX491/MAX1487 family of low-power transceivers designed for RS-485 and RS-422 communications. This series provides robust performance in harsh environments with integrated protection features.

Drivers, Receivers, Transceivers Replacement Considerations

The MAX1487EPA+ serves as a functional substitute within the same family, offering similar half-duplex operation but supporting higher data rates up to 2.5Mbps without slew-rate limiting.