LTC1686CS8#PBF

Drivers, Receivers, Transceivers Overview

The LTC1686CS8#PBF is a high-speed, full-duplex RS485 transceiver from Analog Devices Inc., housed in an 8-lead plastic SOIC package. It supports data rates up to 52Mbps with a typical propagation delay of 18.5ns and low skew of 500ps. Operating on a single 5V supply, it draws 7mA of current. The device features a –7V to 12V common mode input range, guaranteed fail-safe operation, and short-circuit protection.

Drivers, Receivers, Transceivers Feature Summary

• Precision timing architecture ensures stable propagation delays and minimal skew across temperature variations.
• Fail-safe receiver guarantees a logic high output when inputs are shorted or floating within the common mode range.
• Integrated thermal shutdown and short-circuit protection prevent latchup damage 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 component against official datasheets to confirm pinout compatibility and electrical specifications. Ensure the operating environment remains within the specified temperature range for reliable performance. Check for any specific handling requirements related to electrostatic discharge protection during installation.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring precise timing synchronization at high data rates. Consider the 8-pin SOIC package for space-constrained designs. Evaluate the need for fail-safe features if the system operates in environments prone to line faults or open circuits.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC1686/LTC1687 family of precision delay RS485 transceivers. It is pin-compatible with older models like the LTC490, facilitating upgrades in existing designs. The series is designed for robust communication in industrial and telecommunications settings.

Drivers, Receivers, Transceivers Replacement Considerations

LTC490 is a pin-compatible alternative offering similar functionality with lower power consumption. Designers should verify that the replacement meets the required data rate and timing specifications for their specific application.

Drivers, Receivers, Transceivers FAQ

What is the maximum data rate supported by the LTC1686CS8#PBF?

The device supports data rates as high as 52Mbps.

How does the device handle short-circuit conditions?

It includes short-circuit protection that detects shorts and substantially reduces driver output current to prevent damage.

Is the receiver output guaranteed to be safe if inputs are left open?

Yes, the fail-safe feature guarantees a high output state when inputs are shorted or left floating over the entire common mode range.