MAX487CSA+T

Drivers, Receivers, Transceivers Overview

The MAX487CSA+T is a low-power, half-duplex RS-485/RS-422 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single 5V supply and features one driver and one receiver with slew-rate-limited outputs to minimize EMI. The device supports data rates up to 250kbps and includes a low-current shutdown mode consuming 0.1µA. It utilizes a quarter-unit-load receiver input impedance, allowing up to 128 transceivers on the bus. Key electrical parameters include a quiescent current of 120µA, an operating temperature range of 0°C to +70°C for the 'C' grade, and short-circuit protection with thermal shutdown.

Drivers, Receivers, Transceivers Feature Summary

• Slew-rate limited drivers reduce electromagnetic interference (EMI) and signal reflections.
• Quarter-unit-load receiver input impedance enables high node density on the communication bus.
• Integrated low-power shutdown mode significantly reduces standby power consumption.
• Built-in thermal shutdown and short-circuit current limiting protect against excessive power dissipation.

Drivers, Receivers, Transceivers Applications

• Low-Power RS-485 Transceivers
• Low-Power RS-422 Transceivers
• Level Translators
• Transceivers for EMI-Sensitive Applications
• Industrial-Control Local Area Networks

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix and package type when sourcing, as availability may vary by region. Confirm that the component meets RoHS compliance requirements if mandated by your project specifications. Ensure the ordering information matches the required temperature grade and packaging format for your manufacturing process.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring reduced EMI and support for multiple nodes on a single bus line. It is suitable for half-duplex communication systems where low power consumption during idle states is critical. Compare it against standard unit-load devices if higher node counts are necessary. Ensure the system voltage aligns with the specified 5V supply requirement.

Drivers, Receivers, Transceivers Part Context

This part belongs to the MAX481/MAX483/MAX485/MAX487–MAX491/MAX1487 family of low-power transceivers. It shares architectural similarities with the MAX483 but differs in specific impedance characteristics. The family is designed for bidirectional data communications on multipoint bus transmission lines, offering various options for duplex modes and data rates.

Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers: MAX483CSA+T, MAX1487CSA+T.