LTC2871IUHF#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC2871IUHF#TRPBF is a multiprotocol transceiver supporting RS-232, RS-485, and RS-422 protocols. It operates on a single 3V to 5.5V supply with a 1.7V to 5.5V logic interface. The device integrates one RS-485 transceiver and two independent RS-232 transceivers on dedicated I/O lines. It supports data rates up to 20Mbps for RS-485 and 500kbps for RS-232. Pin-controlled integrated termination resistors allow automatic selection of 120Ω for RS-485 and 5kΩ for RS-232. An internal DC/DC boost converter generates the required supplies for RS-232 levels.

Drivers, Receivers, Transceivers Feature Summary

• Supports simultaneous operation of one RS-485 and two RS-232 transceivers on dedicated I/O lines
• Features pin-configurable integrated termination resistors for automatic protocol switching
• Includes an internal DC/DC boost converter eliminating external supply requirements
• Provides half-duplex switching capability for RS-485 configurations

Drivers, Receivers, Transceivers Applications

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

Drivers, Receivers, Transceivers Procurement Notes

Verify the ordering suffix #TRPBF indicates tape and reel packaging rather than tube packaging. Confirm the 'I' grade designation corresponds to the -40°C to 85°C operating temperature range. Ensure the UHF package type matches the 38-Lead (5mm x 7mm) Plastic QFN footprint requirements for the target PCB layout.

Drivers, Receivers, Transceivers Selection Notes

Select this component when independent control of multiple communication protocols is required on dedicated lines. The LTC2871 differs from the LTC2870 by providing separate I/O lines for each transceiver rather than shared pins. Verify that the 38-pin QFN package fits the design constraints and that the 20Mbps RS-485 rate meets system speed requirements.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC2870/LTC2871 family of robust multiprotocol transceivers. While the LTC2870 shares similar functionality, it utilizes shared I/O lines for its transceivers. The LTC2871 variant specifically offers independent control over two RS-232 channels and one RS-485 channel, making it suitable for complex interface designs requiring distinct signal routing.

Drivers, Receivers, Transceivers Replacement Considerations

The LTC2870 series serves as a functional alternative if shared I/O lines are acceptable. Verify compatibility regarding the specific package dimensions and pinout assignments between the 38-pin QFN variants.