LTC1487CS8#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC1487CS8#TRPBF is an ultra-low power RS-485/RS-422 differential line transceiver in an 8-lead SO package. It features high input impedance (96kΩ typical), allowing up to 256 transceivers on a single bus. The device operates on a single 5V supply with controlled slew rate drivers to reduce EMI. Electrical characteristics include a maximum data rate of 250kbps, receiver input common-mode range of -7V to 12V, and thermal shutdown protection. Quiescent current is typically 80mA with the driver disabled and 1mA in shutdown mode.

Drivers, Receivers, Transceivers Feature Summary

• High input impedance design supports up to 256 transceivers on a single bus
• Controlled slew rate output drivers minimize electromagnetic interference
• Thermal shutdown circuit protects against excessive power dissipation during faults
• Fail-safe receiver guarantees a high output state when inputs are left open

Drivers, Receivers, Transceivers Applications

• Battery-powered RS-485/RS-422 communication systems
• Multi-drop industrial bus networks requiring high node density
• Level translation interfaces for low-power microcontrollers

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix TRPBF indicates tape and reel packaging when sourcing this component. Confirm that the manufacturer designation matches Analog Devices Inc., as the part originates from Linear Technology which was acquired. Ensure the ordering information aligns with the 8-lead SO package variant specified in the datasheet.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring high bus capacity due to its 0.125 unit load input impedance. It is suitable for environments where low standby power consumption is critical, given the 1mA shutdown current. Ensure the system voltage remains within the 4.75V to 5.25V range for optimal performance and compliance with RS-485 specifications.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC1487 family of ultra-low power transceivers. It is pin-compatible with the LTC485 but offers significantly higher input impedance. The device is designed to meet RS-485 and RS-422 standards while providing enhanced noise immunity through controlled slew rates and fail-safe receiver features.

Drivers, Receivers, Transceivers Replacement Considerations

The LTC485 is a pin-compatible alternative within the same product family. Verify that the replacement meets the specific impedance and power requirements of the original design.