LTC4312CMS#TRPBF

Signal Buffers, Repeaters, Splitters Overview

The LTC4312CMS#TRPBF is a hot-swappable, pin-selectable 2-channel 2-wire bus multiplexer with bidirectional buffering. It supports I²C, Fast Mode, and SMBus protocols across supply voltages of 2.9V to 5.5V for VCC and 2.25V to 5.5V for VCC2. The device operates within a commercial temperature range of 0°C to 70°C and features selectable rise time accelerators for level translation between 1.5V, 1.8V, 2.5V, 3.3V, and 5V busses. Packaged in a 16-lead MSOP, it isolates upstream capacitance from downstream loads while preventing data corruption during live board insertion.

Signal Buffers, Repeaters, Splitters Feature Summary

• Bidirectional buffering isolates upstream bus capacitance from multiple downstream channels
• Pin-selectable 1:2 multiplexing allows independent connection control via ENABLE pins
• Selectable rise time accelerators enable operation with heavy loads and high frequencies
• Automatic stuck bus disconnect and recovery mechanism prevents bus lockups

Signal Buffers, Repeaters, Splitters Applications

• Telecommunications systems including ATCA backplanes
• Address expansion for I²C devices
• Level translation between different voltage domains
• Capacitance buffering and bus extension
• Live board insertion into active systems

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing this component. Confirm that the CMS designation corresponds to the commercial temperature grade (0°C to 70°C) required for your application environment. Ensure compatibility with the 16-lead MSOP footprint during PCB layout review.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this part when designing systems requiring hot-swappable connectivity for I²C or SMBus networks. It is suitable for applications needing isolation between upstream and downstream bus capacitances. Consider the rise time accelerator settings if operating with high bus capacitance or non-standard pull-up resistors. Verify that the downstream bus supplies fall within the specified VCC2 range for proper level shifting.

Signal Buffers, Repeaters, Splitters Part Context

This component belongs to the LTC4312 family of 2-wire bus multiplexers manufactured by Analog Devices. It serves as a specialized interface solution for managing multiple downstream buses from a single upstream source. The device integrates protection features against stuck bus conditions and provides robust signal integrity through configurable buffering and acceleration circuits.

Signal Buffers, Repeaters, Splitters Replacement Considerations

The LTC4312IMS#TRPBF is a verified industrial-grade replacement offering the same functionality but with an extended temperature range of -40°C to 85°C. Other models in the series include DFN package variants such as the LTC4312IDE#TRPBF.