LTC2871CUHF#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC2871CUHF#TRPBF is a multiprotocol transceiver supporting RS232, RS485, and RS422 protocols. It operates on a single 3V to 5.5V supply voltage with a logic interface range of 1.7V to 5.5V. The device integrates one RS485 transceiver and two independent RS232 transceivers on dedicated I/O lines. It features an internal DC/DC boost converter generating VDD (+7V) and VEE (-6.3V) for RS232 operation. Electrical specifications include a maximum RS485 data rate of 20Mbps and an RS232 rate up to 500kbps. The component is housed in a 38-lead (5mm × 7mm) plastic QFN package and supports an operating temperature range of 0°C to 70°C.

Drivers, Receivers, Transceivers Feature Summary

• Pin-configurable multiprotocol support for RS232, RS485, and RS422 interfaces
• Integrated termination resistors with automatic selection for RS485 (120Ω) and RS232 (5kΩ)
• Internal DC/DC boost converter eliminates the need for external multiple power supplies
• Logic loopback mode enables diagnostic self-testing of driver and receiver paths

Drivers, Receivers, Transceivers Applications

• Point-of-Sale Terminals
• Cable Repeaters
• Protocol Translators

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix TRPBF indicates tape and reel packaging when sourcing components. Confirm that the CUHF designation corresponds to the commercial temperature grade and 38-lead QFN package variant. Ensure compatibility with the required logic supply voltage levels before finalizing procurement orders.

Drivers, Receivers, Transceivers Selection Notes

Select this model when independent control of two RS232 channels and one RS485 channel is required on dedicated pins. The integrated termination resistors simplify board layout by removing external components. Verify that the 38-pin QFN footprint matches the target PCB design constraints and thermal requirements.

Drivers, Receivers, Transceivers Part Context

This component belongs to the LTC2870/LTC2871 family of robust multiprotocol transceivers. Unlike the LTC2870 which shares I/O lines, the LTC2871 provides separate inputs and outputs for its transceivers. This distinction allows for simultaneous protocol operation without pin conflicts, making it suitable for complex communication gateways.

Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.