LTC2872CUHF#PBF

Drivers, Receivers, Transceivers Overview

The LTC2872CUHF#PBF is a dual multiprotocol transceiver supporting RS232, RS485, and RS422 standards. It operates on a single 3V to 5.5V supply with an integrated DC/DC boost converter for RS232 levels. The device features two configurable ports: four RS232 single-ended transceivers or two RS485 differential transceivers. Key specifications include a maximum data rate of 20Mbps for RS485 and 500kbps for RS232. It includes pin-controlled integrated termination resistors (120Ω for RS485, 5kΩ for RS232), half/full-duplex switching, and logic loopback mode. The component is housed in a 38-lead 5mm × 7mm QFN package.

Drivers, Receivers, Transceivers Feature Summary

• Integrated DC/DC boost converter eliminates external supplies for RS232 operation
• Pin-configurable interface supports mixed RS232 and RS485 configurations on shared I/O lines
• Automatic selection of integrated termination resistors removes need for external components
• High ESD protection rating of ±16kV on line I/O pins

Drivers, Receivers, Transceivers Applications

• Point-of-Sale Terminals
• Cable Repeaters
• Protocol Translators
• PROFIBUS-DP Networks

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free finish and tube packaging when sourcing. Confirm the 'C' grade designation corresponds to the commercial temperature range of 0°C to 70°C. Ensure the 38-lead QFN package dimensions match the PCB footprint requirements. Cross-reference the manufacturer part number with authorized distributors to guarantee authenticity.

Drivers, Receivers, Transceivers Selection Notes

Select this component when a single IC must handle both RS232 and RS485 protocols without external termination resistors. It is suitable for designs requiring flexible half-duplex or full-duplex RS485 switching. Consider the integrated DC/DC converter if space constraints prevent using multiple voltage rails. Verify that the 20Mbps RS485 speed meets the system communication requirements.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC2872 family of multiprotocol transceivers manufactured by Analog Devices. It shares functional similarities with other devices in the series but is distinguished by its specific pin configuration and integrated termination features. The CUHF#PBF variant specifically denotes the commercial temperature range and plastic QFN packaging.

Drivers, Receivers, Transceivers Replacement Considerations

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