LTC4307IMS8#PBF

Signal Buffers, Repeaters, Splitters Overview

The LTC4307IMS8#PBF is a hot swappable, bidirectional 2-wire bus buffer designed for I/O card insertion into live backplanes. It isolates input and output capacitances to prevent data corruption during insertion. The device features a 1V precharge circuit on SDA and SCL lines to minimize disturbances. It includes a 30ms stuck bus timeout that triggers automatic clock pulse generation to recover the bus. The buffer provides rise time acceleration for improved signal integrity. Electrical specifications include a supply voltage range of 2.3V to 5.5V, a typical supply current of 8mA, and an operating temperature range of -40°C to 85°C.

Signal Buffers, Repeaters, Splitters Feature Summary

• Bidirectional buffering with capacitance isolation between backplane and card sides
• Automatic stuck bus recovery via internal timer and clock pulse generation
• Rise time accelerators for controlled transitions and noise immunity
• 1V precharge circuitry to minimize bus disturbances during live insertion

Signal Buffers, Repeaters, Splitters Applications

• Servers
• RAID Systems
• ATCA
• Live board insertion into backplanes
• Capacitance buffering and bus extension

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific suffix IMS8 indicates the industrial temperature grade (-40°C to 85°C) and MSOP package. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor declarations prior to procurement. Ensure the ordering information matches the required thermal and electrical specifications for the target application environment.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when hot swapping capabilities and bus isolation are required for I2C or SMBus systems. The industrial temperature range suits applications outside standard commercial limits. Verify that the system pull-up resistors allow sufficient rise times to activate the internal accelerators. Ensure the ENABLE pin logic levels align with the control circuitry requirements for connection management.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to the LTC4307 family of 2-wire bus buffers. The IMS8 suffix denotes the Industrial temperature grade and the 8-lead MSOP plastic package. Other variants in the series may offer different temperature ranges or package options, such as the DFN package. The device is manufactured by Analog Devices Inc., formerly Linear Technology Corporation.

Signal Buffers, Repeaters, Splitters Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.