LTC1687CS#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC1687CS#TRPBF is a high-speed, precision delay, full-duplex RS485 transceiver manufactured by Analog Devices Inc. It operates from a single 5V supply and supports data rates up to 52Mbps while meeting RS422 requirements. The device features tightly controlled propagation delays of typically 18.5ns with low skew of 500ps. It guarantees fail-safe operation over the entire common mode range of –7V to 12V and includes short-circuit and thermal shutdown protection. The component is housed in a 14-lead plastic SO package.

Drivers, Receivers, Transceivers Feature Summary

• Precision timing architecture ensures stable propagation delays and minimal skew across temperature variations.
• Integrated fail-safe mechanism maintains a logic high output when inputs are floating or shorted within the common mode range.
• Short-circuit and thermal shutdown circuitry protect the driver and receiver outputs 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 that the ordering suffix #TRPBF corresponds to the tape and reel packaging format required for automated assembly processes. Confirm the specific grade (C or I) matches the intended operating temperature range before finalizing procurement orders.

Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring precise timing synchronization between driver and receiver paths at high data rates. Ensure the application environment stays within the specified voltage limits and consider the 14-lead SO package dimensions for PCB layout constraints.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC1686/LTC1687 family of precision delay RS485 transceivers. It shares architectural similarities with the LTC1686 but adds independent receiver and driver enable controls via RE and DE pins for flexible three-state operation management.

Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers: LTC1686CS#TRPBF.

Drivers, Receivers, Transceivers FAQ

What is the input resistance of the receiver when the device is unpowered?

The receiver input resistance remains greater than or equal to 22kΩ even when the device is unpowered or disabled.

How does the device handle short-circuit conditions on the outputs?

The device detects shorted outputs and substantially reduces the driver output current to approximately 20mA max until the short is removed, preventing latchup damage.

What is the guaranteed fail-safe condition for the receiver inputs?

The receiver guarantees a high output state when the inputs are shorted together or left floating over the entire common mode range of –7V to 12V.