LTC2873IUFD#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC2873IUFD#TRPBF is a single-bus RS485/RS232 multiprotocol transceiver in a 24-lead 4mm × 5mm QFN package. It operates on a single 3V to 5.5V supply with a logic interface of 1.7V to VCC. The device supports up to 20Mbps data rates for RS485 and features selectable slew-controlled RS232 operation at 1Mbps or 250kbps. An integrated DC/DC boost converter generates required supplies using a 10µH inductor and capacitors. It includes software-selectable termination resistors (120Ω for RS485, 5kΩ for RS232) and supports up to 256 nodes per bus.

Drivers, Receivers, Transceivers Feature Summary

• Pin-configurable multiprotocol support for RS232, RS485, and RS422 protocols on shared bus pins
• Integrated DC/DC boost converter eliminates the need for multiple external power supplies
• Software-selectable automatic termination resistor switching between RS485 and RS232 modes
• Logic loopback mode enables diagnostic self-test by steering driver inputs to receiver outputs

Drivers, Receivers, Transceivers Applications

• Industrial sensors and actuators
• Alarm systems
• Traffic control and monitoring
• Highway signs and jumbo displays

Drivers, Receivers, Transceivers Procurement Notes

Verify the ordering suffix #TRPBF indicates tape and reel packaging when sourcing this component. Confirm the specific temperature grade matches the application requirements, as the IUFD suffix corresponds to the industrial range of –40°C to 85°C. Ensure the supplier provides documentation confirming the lead-free finish status associated with the PBF designation.

Drivers, Receivers, Transceivers Selection Notes

Select this component when a single transceiver must handle both RS232 and RS485 protocols without external switching relays. It is suitable for designs requiring high ESD protection ratings of ±26kV HBM on interface pins. Consider the integrated termination feature if board space constraints prevent the use of discrete termination resistors.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC2873 family of robust pin-configurable multiprotocol transceivers manufactured by Analog Devices Inc. The device shares functional characteristics with other members of the series but differs in operating temperature ranges and packaging options. The IUFD variant specifically denotes the industrial temperature grade housed in the 24-lead plastic QFN package.

Drivers, Receivers, Transceivers Replacement Considerations

Direct substitutes within the same product line include the LTC2873CUFD#TRPBF for commercial temperature applications and the LTC2873HUFD#TRPBF for extended industrial temperatures. These parts maintain identical electrical specifications and pin configurations while differing only in their specified operating temperature ranges.