LTC2870HUFD#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC2870HUFD-1#TRPBF is a robust pin-configurable multiprotocol transceiver supporting RS232, RS485, and RS422 protocols. It operates on a single 3V to 5.5V supply with a logic interface of 1.7V to 5.5V. The device integrates two RS232 transceivers and one RS485 transceiver on shared I/O lines. Key electrical parameters include a maximum data rate of 20Mbps for RS485 and 500kbps for RS232. It features integrated DC/DC boost converters generating VDD (+7V) and VEE (-6.3V). The H-grade variant supports an operating temperature range of –40°C to 125°C.

Drivers, Receivers, Transceivers Feature Summary

• Pin-controlled integrated termination resistors allow easy interface reconfiguration without external components.
• Half-duplex switching capability enables four-wire and two-wire RS485 configurations.
• Logic loopback mode steers driver inputs to receiver outputs for diagnostic self-testing.
• RS485 receivers support up to 256 nodes per bus with full failsafe operation.

Drivers, Receivers, Transceivers Applications

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

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging when sourcing this component. Confirm that the HUFD designation corresponds to the QFN package and H-grade temperature rating. Ensure compatibility with the required voltage levels and protocol configurations before finalizing procurement orders.

Drivers, Receivers, Transceivers Selection Notes

Select the LTC2870 over the LTC2871 if the design requires shared I/O lines for the RS232 and RS485 transceivers rather than dedicated lines. Consider the H-grade specification for applications requiring operation in temperatures ranging from –40°C to 125°C. Verify that the 28-pin QFN package fits the available PCB footprint constraints.

Drivers, Receivers, Transceivers Part Context

This component belongs to the LTC2870/LTC2871 series of multiprotocol transceivers manufactured by Analog Devices Inc. The series is designed to simplify system integration by combining multiple communication standards into a single chip. The LTC2870 specifically focuses on shared line configurations, distinguishing it from the independent channel architecture of the LTC2871.

Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult Analog Devices marketing for information on non-standard lead-based finish parts or wider operating temperature ranges.