MAX491CSD+T

Drivers, Receivers, Transceivers Overview

The MAX491CSD+T is a low-power, full-duplex transceiver for RS-485 and RS-422 communication systems. It integrates one driver and one receiver within a 14-pin SO package. The device operates from a single 5V supply (4.75V to 5.25V) and supports data rates up to 2.5Mbps without slew-rate limiting. Key electrical parameters include a typical quiescent current of 300µA, a maximum propagation delay of 60ns, and a differential receiver threshold of ±200mV. It features short-circuit current limiting and thermal shutdown protection.

Drivers, Receivers, Transceivers Feature Summary

• Full-duplex operation with independent driver and receiver enable controls
• High-speed transmission capability up to 2.5Mbps
• Integrated thermal shutdown and short-circuit current limiting for fault protection
• Fail-safe receiver input that guarantees a logic-high output during open-circuit conditions

Drivers, Receivers, Transceivers Applications

• Low-Power RS-485 Transceivers
• Low-Power RS-422 Transceivers
• Industrial-Control Local Area Networks

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'CSD' corresponds to the commercial temperature range and SO-14 package configuration required for your design. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors before finalizing procurement orders.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring full-duplex communication at speeds up to 2.5Mbps on a 5V bus. Unlike half-duplex variants, it provides separate transmit and receive lines. Ensure the system does not require the low-current shutdown mode available in other family members like the MAX481.

Drivers, Receivers, Transceivers Part Context

This part belongs to the MAX481/MAX483/MAX485/MAX487–MAX491/MAX1487 series of low-power transceivers. While many devices in this family are half-duplex, the MAX491 specifically enables full-duplex communication. It shares common protection features such as thermal shutdown with its siblings but differs in duplex architecture.

Drivers, Receivers, Transceivers Replacement Considerations

The MAX489 is a direct functional replacement offering identical full-duplex capabilities and pinout compatibility within the same series.