MAX487ESA+TCBX

Drivers, Receivers, Transceivers Overview

The MAX487ESA+TCBX is a low-power, half-duplex RS-485 and RS-422 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It integrates one driver and one receiver in an 8-pin SOIC package. The device supports data transmission 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-current shutdown mode consuming only 0.1µA. The receiver input impedance is 1/4 unit load, allowing up to 128 transceivers on the bus. It includes thermal shutdown protection and fail-safe receiver inputs.

Drivers, Receivers, Transceivers Feature Summary

• Slew-rate limited drivers reduce electromagnetic interference and signal reflections for error-free communication.
• Quarter-unit-load receiver input impedance enables high node density of up to 128 devices per bus.
• Low-power shutdown mode significantly reduces supply current consumption when disabled.
• Integrated thermal shutdown circuitry protects against excessive power dissipation.

Drivers, Receivers, Transceivers Applications

• Industrial-control local area networks
• EMI-sensitive applications requiring reduced noise emissions
• Multipoint bus transmission lines

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix TCBX against official manufacturer documentation to confirm packaging details and RoHS compliance status. Ensure the component matches the required temperature grade and pin configuration before integration into production designs.

Drivers, Receivers, Transceivers Selection Notes

Select this component for half-duplex RS-485 or RS-422 systems requiring low power consumption and high bus capacity. It is suitable for environments where EMI reduction is critical due to its slew-rate-limited output characteristics. Compare with standard unit-load devices if fewer than 32 nodes are needed.

Drivers, Receivers, Transceivers Part Context

This part belongs to the MAX48x family of low-power transceivers designed for bidirectional data communications. It shares functional similarities with the MAX481, MAX483, and MAX1487 but is distinguished by its 250kbps speed limit and 1/4 unit load capability, differentiating it from higher-speed or standard-load variants.

Drivers, Receivers, Transceivers Replacement Considerations

MAX487ESA+T

Drivers, Receivers, Transceivers FAQ

What is the maximum number of transceivers supported on a single bus?

The MAX487 supports up to 128 transceivers on the bus due to its quarter-unit-load receiver input impedance.

How does the device handle driver faults?

Drivers are short-circuit current limited and protected by thermal shutdown circuitry that places outputs into a high-impedance state during excessive power dissipation.

What is the quiescent current in shutdown mode?

In the low-current shutdown mode, the device typically consumes only 0.1µA of supply current.