MAX3087CSA+

Overview

The MAX3087CSA+ is a full-duplex RS-422/RS-485 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +5V supply (4.75V to 5.25V) and supports data rates up to 10Mbps with unrestricted driver slew rates. The device features fail-safe circuitry that guarantees a logic-high receiver output when inputs are open or shorted. It incorporates thermal shutdown protection for the driver outputs and includes one driver and one receiver within an 8-pin SOIC package.

Feature Summary

• Fail-safe receiver circuitry ensures a high logic state during bus idle or fault conditions
• Thermal shutdown mechanism protects against excessive power dissipation
• High input impedance allows connection of up to 256 transceivers on a single bus

Applications

• RS-422/RS-485 communications
• Industrial-control local area networks
• Level translators

Procurement Notes

Verify the specific suffix 'CSA+' against official documentation to confirm the commercial temperature range and SOIC-8 packaging configuration. Ensure compatibility with standard 5V logic levels and check for any lead-free or RoHS compliance markings required for the target assembly process.

Selection Notes

Select this component for applications requiring full-duplex communication at speeds up to 10Mbps. It is suitable for systems needing robust noise immunity through fail-safe design and high bus loading capacity. Verify that the operating environment falls within the specified 0°C to +70°C range for the 'C' grade variant.

Part Context

This part belongs to the MAX3080–MAX3089 family of high-speed transceivers designed for RS-485/RS-422 standards. Unlike slew-rate-limited variants in the series, the MAX3087 provides unrestricted driver speed for maximum throughput while maintaining the family's core reliability features such as short-circuit protection and high common-mode rejection.

Replacement Considerations

The MAX3087EESA+ serves as the industrial temperature grade equivalent (-40°C to +85°C). Other pin-compatible options include the MAX3080, MAX3083, and MAX3086, though these may feature different slew-rate limitations or require additional control pins.