LTC2872IUHF#PBF

Drivers, Receivers, Transceivers Overview

The LTC2872IUHF#PBF is a dual multiprotocol transceiver supporting RS-232, RS-485, and RS-422 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 RS-232 or two RS-485 transceivers. Key electrical parameters include a maximum data rate of 20Mbps for RS-485 and 500kbps for RS-232. It features an integrated DC/DC boost converter generating ±6.3V/-7.5V supplies for RS-232 signaling. The component includes pin-controlled termination resistors (120Ω for RS-485, 5kΩ for RS-232), half/full-duplex switching, and loopback mode. It is housed in a 38-pin 5mm × 7mm QFN package.

Drivers, Receivers, Transceivers Feature Summary

• Pin-configurable dual ports support flexible RS-232, RS-485, and RS-422 protocol selection.
• Integrated DC/DC boost converter eliminates external power supplies for RS-232 operation.
• Automatically selected internal termination resistors reduce external component count.
• High ESD protection rating of ±16kV on line I/O pins ensures robust performance.

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 temperature grade 'I' corresponds to the industrial range of -40°C to 85°C required for the application environment. Ensure the 38-pin QFN footprint matches the PCB layout specifications provided in the datasheet.

Drivers, Receivers, Transceivers Selection Notes

Select this component when a single IC must handle mixed RS-232 and RS-485 protocols without external termination resistors. Verify that the input voltage range of 3V to 5.5V aligns with the system power rails. Consider the 20Mbps RS-485 speed capability if high-speed communication is necessary. Check that the 38-pin QFN package size fits within the available board space constraints.

Drivers, Receivers, Transceivers Part Context

The LTC2872 belongs to Analog Devices' family of multiprotocol interface devices designed for flexible communication systems. It serves as a direct replacement for discrete solution designs combining separate RS-232 and RS-485 transceivers. The device simplifies board design by integrating level shifting and termination functions into a compact form factor suitable for dense electronics.

Drivers, Receivers, Transceivers Replacement Considerations

Publicly confirmed substitute part numbers are not identified in the provided documentation. Consult manufacturer resources for cross-reference information regarding equivalent multiprotocol transceivers with similar pin configurations and electrical characteristics.