LTC2871CUHF#PBF

Drivers, Receivers, Transceivers Overview

The LTC2871CUHF#PBF is a single-supply multiprotocol transceiver supporting RS-232, RS-422, and RS-485 standards. It integrates two independent RS-232 channels and one RS-485 channel on dedicated I/O lines within a 38-pin QFN package. The device operates on a 3V to 5.5V supply with a logic interface range of 1.7V to 5.5V. It features an integrated DC/DC boost converter for RS-232 levels, achieving data rates up to 20Mbps for RS-485 and 500kbps for RS-232. Pin-controlled termination resistors (120Ω for RS-485, 5kΩ for RS-232) are included.

Drivers, Receivers, Transceivers Feature Summary

• Pin-configurable multiprotocol support for RS-232, RS-422, and RS-485
• Integrated DC/DC boost converter eliminates external supplies
• Software-selectable automatic termination resistor switching
• High ESD protection on interface pins

Drivers, Receivers, Transceivers Applications

• Point-of-sale terminals
• Cable repeaters
• Protocol translators

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'CUHF' corresponds to the commercial temperature grade (0°C to 70°C) and the 38-lead QFN package configuration. Confirm that the '#PBF' designation indicates lead-free finish and RoHS compliance as per manufacturer specifications. Ensure the ordering information matches the required pinout for the LTC2871 variant.

Drivers, Receivers, Transceivers Selection Notes

Select this component when independent control of two RS-232 transceivers and one RS-485 transceiver is required on dedicated lines. It is suitable for applications needing protocol switching without external termination components. Consider the operating temperature range and package size constraints relative to the industrial or automotive variants if wider ranges are needed.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC2870/LTC2871 family of robust pin-configurable multiprotocol transceivers. While the LTC2870 shares similar capabilities, it utilizes shared I/O lines for its transceivers. The LTC2871 distinguishes itself by providing dedicated I/O lines for each transceiver, allowing simultaneous operation of multiple protocols without line sharing conflicts.

Drivers, Receivers, Transceivers Replacement Considerations

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