LTC1689IS#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC1689IS#TRPBF is a high-speed RS485 quad differential line driver manufactured by Analog Devices Inc. It supports data rates up to 100Mbps and operates on a single 3V or 5V supply. The device features hot-swap capability, maintaining high-impedance outputs during board insertion or power-off states. Propagation delay is guaranteed between 4ns and 8ns over the full industrial temperature range (-40°C to 85°C). It includes short-circuit protection with typical output current limited to 3mA and thermal shutdown circuitry.

Drivers, Receivers, Transceivers Feature Summary

• Hot-swap capable outputs maintain bus integrity during board insertion and removal
• Guaranteed propagation delay window of 4ns to 8ns across operating temperatures
• Integrated short-circuit protection limits output current to approximately 3mA
• Thermal shutdown protects against excessive power dissipation

Drivers, Receivers, Transceivers Applications

• High-speed RS485 twisted-pair communication networks
• Backplane drivers for point-to-point and multipoint configurations
• Complementary clock distribution systems
• STS-1/OC-1 data transmission interfaces

Drivers, Receivers, Transceivers Procurement Notes

Verify the datasheet revision and electrical specifications match the required design parameters. Confirm the package type corresponds to the PCB footprint. Ensure the ordering suffix matches the specific reel quantity and tape configuration required for assembly.

Drivers, Receivers, Transceivers Selection Notes

Select this component when hot-swap functionality is required for RS485 buses. Compare propagation delay stability against standard CMOS drivers. Verify that the 3V or 5V supply voltage aligns with system power rails. Check pin compatibility if replacing older LTC486/LTC487 designs.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC1688/LTC1689 family of ultrahigh speed differential bus drivers. The LTC1689 variant specifically allows two drivers to be enabled simultaneously via separate enable pins, unlike the LTC1688 which enables all four together. Both share identical electrical characteristics and packaging.

Drivers, Receivers, Transceivers Replacement Considerations

LTC1688IS#TRPBF: Pin-compatible alternative enabling all four drivers simultaneously instead of pairs.