LTC1688CS#PBF

Drivers, Receivers, Transceivers Overview

The LTC1688CS#PBF is a quad differential RS485 line driver manufactured by Analog Devices Inc. It supports data rates up to 100Mbps with a guaranteed propagation delay of 8ns ±4ns over the full operating temperature range. The device operates from a single 3V or 5V supply, drawing approximately 9mA of supply current. It features Hot Swap capability, maintaining high impedance outputs during power-off or three-state conditions. The component is housed in a 16-lead plastic SOIC package and is rated for commercial temperatures (0°C to 70°C).

Drivers, Receivers, Transceivers Feature Summary

• Hot Swap capable outputs maintain backplane data integrity during board insertion and removal.
• Driver outputs remain high impedance across the entire common mode range (-7V to 12V) when powered off or disabled.
• Integrated short-circuit protection reduces output current to approximately 3mA during faults.
• Thermal shutdown circuitry protects the device from excessive power dissipation.

Drivers, Receivers, Transceivers Applications

• High-speed RS485 twisted-pair communication links
• High-speed backplane drivers
• STS-1/OC-1 data drivers
• SCSI drivers

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix matches the required package and temperature grade. Confirm that the #PBF designation indicates lead-free compliance and RoHS adherence. Ensure the source documentation explicitly lists the part number as available through authorized channels before proceeding with acquisition.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring ultrahigh speed differential signaling up to 100Mbps. It is suitable for environments where hot swapping is necessary without disturbing existing bus data. Verify that the system operates within the specified 3V to 5.25V supply range and requires pin compatibility with legacy LTC486/LTC487 designs.

Drivers, Receivers, Transceivers Part Context

This component belongs to the LTC1688/LTC1689 family of ultrahigh speed differential bus drivers. While the LTC1688 enables all four drivers simultaneously, the LTC1689 allows independent enabling of two drivers at a time. Both variants share identical electrical characteristics and packaging, differing primarily in their enable logic configuration.

Drivers, Receivers, Transceivers Replacement Considerations

Publicly confirmed substitutes include the LTC1689CS#PBF for dual-driver control configurations. Legacy compatible parts such as the LTC486 and LTC487 offer pin compatibility but operate at lower speeds (10Mbps).