MAX3087CPA

Overview

The MAX3087CPA is a low-power, half-duplex RS-422/RS-485 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single +5V supply with a specified data rate of 10Mb/s and supports up to 32 unit loads on the bus. The device features fail-safe circuitry that ensures a high logic state at the receiver output when inputs are open or disconnected. It includes thermal shutdown protection for the driver and limits slew rates to minimize electromagnetic interference (EMI). The component is housed in an 8-pin PDIP package and is rated for operation within a temperature range of 0°C to +70°C.

Feature Summary

• Integrated fail-safe mechanism guarantees a defined high logic level at the receiver output during input disconnection or fault conditions.
• Built-in thermal shutdown circuitry protects the internal driver from damage due to excessive power dissipation or overheating.
• Slew-rate limiting design reduces signal ringing and minimizes electromagnetic interference (EMI) generated during data transmission.

Applications

• Industrial automation networks utilizing RS-485 communication protocols
• Building automation systems requiring robust multi-drop connectivity
• Process control instrumentation with long-distance serial data links

Procurement Notes

Verify the specific suffix against official manufacturer documentation to confirm package type and temperature grade. Ensure the source provides valid RoHS compliance statements and traceability records. Cross-reference the part number with current Analog Devices listings to confirm availability status and lead times before finalizing procurement plans.

Selection Notes

Select this component for applications requiring reliable half-duplex communication over twisted-pair lines. It is suitable for environments where bus faults may occur, given its fail-safe feature. Compare power consumption and pin compatibility with other MAX308x series variants if system constraints require different packaging or extended temperature ranges.

Part Context

This device belongs to the MAX308x family of RS-422/RS-485 transceivers designed for industrial and commercial use. It shares functional similarities with other members of the series but differs in package configuration and operating temperature specifications. The MAX3087CPA specifically targets cost-sensitive applications needing standard plastic DIP packaging.

Replacement Considerations

Direct substitutes include other MAX308x series variants such as the MAX3087ESA+ for surface mount requirements. Verify electrical compatibility and pinout alignment before substitution. Consult official cross-reference guides for any changes in performance characteristics or regulatory compliance.