MAX490CSA+T

Drivers, Receivers, Transceivers Overview

The MAX490CSA+T is a low-power, full-duplex RS-485/RS-422 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It integrates one driver and one receiver within an 8-pin SOIC package. The device supports data transmission rates up to 2.5Mbps with unrestricted slew rates. It operates on a single 5V supply (4.75V to 5.25V) and draws a typical quiescent current of 300µA. The component features short-circuit current limiting and thermal shutdown protection for the driver outputs. Additionally, it includes a fail-safe receiver input that guarantees a logic-high output when the input lines are open.

Drivers, Receivers, Transceivers Feature Summary

• Full-duplex communication capability with independent driver and receiver enable controls
• High-speed data transmission support up to 2.5Mbps without slew-rate limitations
• Integrated protection mechanisms including short-circuit current limiting and thermal shutdown
• Fail-safe receiver design ensuring high logic output during open-circuit input 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 CSA against official documentation to confirm the commercial temperature range and plastic SOIC packaging configuration. Ensure the + designation aligns with required environmental compliance standards for the target application. Cross-reference the manufacturer's latest ordering information to validate availability and lead times before finalizing procurement plans.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring full-duplex RS-485 or RS-422 communication at speeds up to 2.5Mbps. It is suitable for systems powered by a standard 5V rail where low quiescent current is beneficial. Choose this part over slew-rate-limited variants if higher data throughput is prioritized over electromagnetic interference reduction. Ensure the system design accommodates the standard unit-load receiver impedance constraints.

Drivers, Receivers, Transceivers Part Context

This device belongs to the MAX4xx series of low-power transceivers designed for bidirectional data communications on multipoint bus transmission lines. It shares architectural similarities with half-duplex counterparts like the MAX485 but provides separate transmit and receive channels. The series is widely utilized in industrial environments requiring robust serial communication interfaces with moderate data rate requirements.

Drivers, Receivers, Transceivers Replacement Considerations

MAX491ESA+T: Offers identical electrical performance but utilizes a 14-pin package instead of 8-pin.