LTC1687IS#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC1687IS#TRPBF is a high-speed, full-duplex RS485/RS422 transceiver from Analog Devices. It supports data rates up to 52Mbps with precision propagation delay of 18.5ns typical and skew under 500ps. Operating on a single 5V supply, it draws 7mA current. The device features a –7V to 12V common mode input range, guaranteed fail-safe operation, and short-circuit protection. It is housed in an 8-lead SOIC package and operates within an industrial temperature range of –40°C to +85°C.

Drivers, Receivers, Transceivers Feature Summary

• Precision timing architecture ensures stable propagation delays and low skew across wide temperature and common mode ranges.
• Guaranteed fail-safe receiver output remains high when inputs are shorted or floating over the entire common mode range.
• Integrated thermal shutdown and short-circuit protection reduce driver output current during fault conditions.

Drivers, Receivers, Transceivers Applications

• High speed RS485/RS422 full duplex transceivers
• Level translator circuits
• Backplane transceiver applications
• STS-1/OC-1 data transceivers
• Signal repeaters

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging for automated assembly. Confirm the IS variant meets the required industrial temperature specifications. Ensure the ordering information matches the exact pinout and package dimensions provided in the official datasheet before finalizing procurement.

Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring precise timing synchronization at high data rates. The 18.5ns typical delay minimizes duty cycle distortion compared to standard CMOS transceivers. Verify that the system can accommodate the 5V supply requirement and that the 8-lead SOIC package fits the available board space constraints.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC1686/LTC1687 family of precision delay RS485 transceivers. The LTC1687 differs from the LTC1686 by providing separate enable pins for the driver and receiver, allowing for controlled three-state outputs. Both devices share identical electrical characteristics and pin compatibility with legacy parts like the LTC490.

Drivers, Receivers, Transceivers Replacement Considerations

The LTC1686CS8#PBF serves as a functional substitute if independent driver/receiver control is not required. Other RS485 transceivers may lack the specified 18.5ns precision delay or the guaranteed fail-safe operation over the full –7V to 12V common mode range.