LTC4315CDE#PBF

Signal Buffers, Repeaters, Splitters Overview

The LTC4315CDE#PBF is a hot-swappable 2-wire bus buffer designed for I2C and SMBus applications. It provides bidirectional buffering with high noise margin up to 0.3 • VCC, supporting level translation between 1.5V, 1.8V, 2.5V, 3.3V, and 5V busses. The device operates at 400kHz with an input supply voltage range of 2.9V to 5.5V and output accelerator supply from 2.25V to 5.5V. Input supply current is typically 8.1mA when enabled. It features a 12-lead (4mm × 3mm) DFN package and operates within a temperature range of 0°C to 70°C.

Signal Buffers, Repeaters, Splitters Feature Summary

• Provides capacitance buffering and isolation for live board insertion and removal from backplanes.
• Includes stuck bus disconnect and recovery logic that generates clock pulses to free stuck buses.
• Features selectable rise time accelerator currents controlled by the ACC pin to reduce bus rise times.
• Supports interoperability with non-compliant I2C devices driving high VOL levels.

Signal Buffers, Repeaters, Splitters Applications

• Bidirectional buffering to increase fanout on I2C/SMBus networks
• Telecommunications systems including ATCA shelf managers and FRUs
• Servers and PMBus interfaces requiring level translation

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific ordering suffix matches the required package type and temperature grade. Confirm that the component meets RoHS compliance standards as indicated in official documentation. Ensure the part number corresponds to the correct manufacturer specifications before finalizing procurement orders.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component for applications requiring hot-swap capability and high noise margins on 2-wire buses. Consider the operating temperature range and supply voltage requirements relative to the target system architecture. Evaluate the need for rise time acceleration based on bus capacitance and pull-up resistor values.

Signal Buffers, Repeaters, Splitters Part Context

This component belongs to the LTC4315 series of interface ICs manufactured by Analog Devices Inc. It is specifically categorized as a signal buffer and repeater designed for 2-wire bus applications. The device integrates protection and control logic for reliable communication in complex bus topologies.

Signal Buffers, Repeaters, Splitters Replacement Considerations

Consult manufacturer documentation for verified substitute part numbers. Ensure any replacement maintains compatibility with 2-wire bus protocols and supports the required voltage levels and package dimensions.