LTC491CS#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC491CS#TRPBF is a low-power differential bus transceiver designed for RS-485 and RS-422 applications. It operates on a single 5V supply with a typical current consumption of 300mA. The device features an extended common mode range from -7V to 12V, allowing for ground differences between devices. It includes thermal shutdown protection and glitch-free driver outputs for live insertion. The package is a 14-lead plastic Small Outline (SOIC) in tape and reel format.

Drivers, Receivers, Transceivers Feature Summary

• Extended common mode range supporting -7V to 12V bus environments
• Thermal shutdown circuitry prevents damage from excessive power dissipation
• Glitch-free driver outputs enable safe live insertion or removal
• Fail-safe receiver guarantees high output state when inputs are open

Drivers, Receivers, Transceivers Applications

• Multipoint data transmission networks using RS-485 standards
• Full-duplex communication systems compliant with RS-422 specifications
• Line repeater configurations for extending cable distances beyond standard limits

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix TRPBF indicates the tape and reel packaging configuration required for automated assembly processes. Confirm that the CS designation corresponds to the commercial temperature range of 0°C to 70°C. Ensure the ordering information matches the exact manufacturer part number to avoid discrepancies in package type or electrical characteristics during procurement.

Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring robust fault protection and extended common mode voltage tolerance. The CMOS architecture provides significant power savings compared to bipolar counterparts while maintaining ESD ruggedness. Consider the 14-lead SOIC package dimensions for PCB layout constraints and verify compatibility with existing system logic levels and termination requirements.

Drivers, Receivers, Transceivers Part Context

This component belongs to the LTC491 family of low-power RS-485/RS-422 transceivers manufactured by Analog Devices Inc. It serves as a pin-compatible alternative to older bipolar technologies like the SN75180. The series offers various package options including PDIP and SOIC, catering to different manufacturing and thermal management needs within industrial communication interfaces.

Drivers, Receivers, Transceivers Replacement Considerations

The datasheet lists the SN75180 as a pin-compatible predecessor. Modern alternatives include the LTC1686/LTC1687 for higher speed requirements or the LT1791/LTC1791A for enhanced voltage protection capabilities.