LTC4314IUDC#TRPBF

Signal Buffers, Repeaters, Splitters Overview

The LTC4314IUDC#TRPBF is a hot-swappable, pin-selectable 4-channel 2-wire bus multiplexer with integrated bidirectional buffers. It supports level translation between 1.5V, 1.8V, 2.5V, 3.3V, and 5V busses while isolating upstream capacitance from downstream loads. The device operates on a VCC supply of 2.9V to 5.5V and features selectable rise time accelerators controlled by the ACC pin. It includes automatic stuck bus disconnect and recovery logic, generating up to sixteen clock pulses upon fault detection. Packaged in a 20-lead (3mm × 4mm) QFN, it ensures data integrity during live board insertion.

Signal Buffers, Repeaters, Splitters Feature Summary

• Provides 1:4 multiplexing for I2C, SMBus, and PMBus applications with independent channel enable control.
• Features high noise margin buffering compatible with non-compliant devices driving high VOL levels.
• Includes automatic stuck bus detection and recovery mechanisms that isolate faults and attempt bus release.
• Supports live backplane insertion and removal without corrupting data or clock signals.

Signal Buffers, Repeaters, Splitters Applications

• Telecommunications systems including ATCA architectures
• Address expansion for multi-drop bus networks
• Level translation between different voltage domains
• Capacitance buffering and bus extension
• Live board insertion into active backplanes

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific ordering suffix #TRPBF confirms tape and reel packaging rather than tube. Confirm the temperature grade 'I' indicates operation within the industrial range of -40°C to 85°C. Ensure the QFN package dimensions match the design footprint requirements. Check RoHS compliance status as indicated in the manufacturer documentation.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when designing systems requiring isolation between multiple downstream buses and a single upstream controller. Consider the ACC pin configuration to balance rise time acceleration strength against noise margin requirements. Evaluate the total bus capacitance and pull-up resistor values to ensure the internal slew rate detectors activate correctly. Verify that the input and output supply voltages align with the specified VCC and VCC2 ranges.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to the LTC4314 family of 2-wire bus multiplexers manufactured by Analog Devices. It shares functional similarities with other Linear Technology bus buffers but offers specific multiplexing capabilities with four independently controllable channels. The device is designed to complement other interface components like the LTC4307 for HDMI DDC applications.

Signal Buffers, Repeaters, Splitters Replacement Considerations

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