LTC2872CUHF#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC2872CUHF#TRPBF is a dual multiprotocol transceiver supporting RS232, RS485, and RS422 standards. It operates on a single 3V to 5.5V supply with a logic interface range of 1.7V to VCC. The device integrates two independent ports configurable as four RS232 or two RS485 transceivers. Key electrical parameters include a maximum RS485 data rate of 20Mbps and an RS232 rate of 500kbps. It features integrated DC/DC boost generation for RS232 levels, ±16kV ESD protection on line I/O, and automatic selection of 120Ω RS485 and 5kΩ RS232 termination resistors. The component is housed in a 38-lead 5mm × 7mm QFN package.

Drivers, Receivers, Transceivers Feature Summary

• Pin-configurable dual ports support flexible combinations of RS232, RS485, and RS422 protocols on shared I/O lines.
• Integrated DC/DC boost converter generates required positive and negative supplies for RS232 operation from a single input voltage.
• Software-selectable integrated termination resistors eliminate external components and control relays for bus impedance matching.
• Logic loopback mode enables diagnostic self-testing by steering driver inputs directly to receiver outputs.

Drivers, Receivers, Transceivers Applications

• Point-of-sale terminals
• Cable repeaters
• Protocol translators
• PROFIBUS-DP networks

Drivers, Receivers, Transceivers Procurement Notes

Verify the ordering suffix #TRPBF indicates tape and reel packaging when sourcing this specific variant. Confirm the temperature grade 'C' corresponds to the commercial range of 0°C to 70°C. Ensure the 38-pin QFN footprint matches the PCB design constraints. Cross-reference the manufacturer's latest documentation for any pinout revisions or lead-free finish specifications before finalizing procurement orders.

Drivers, Receivers, Transceivers Selection Notes

Select the LTC2872 when a single IC must handle mixed serial communication protocols without external level shifters. The integrated termination resistors simplify board layout compared to discrete solutions. Verify that the application requires the specific 20Mbps RS485 speed capability. Consider the thermal performance of the exposed pad in the QFN package for high-density designs requiring robust heat dissipation.

Drivers, Receivers, Transceivers Part Context

This component belongs to the LTC2872 family of multiprotocol transceivers manufactured by Analog Devices Inc. The CUHF designation specifies the commercial temperature range and plastic QFN package type. The part is designed to replace multiple discrete transceiver chips, consolidating RS232 and RS485 functionality into a single compact solution for embedded systems.

Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult Analog Devices marketing for parts specified with wider operating temperature ranges or alternative package options.