LTC4307IDD#PBF

Signal Buffers, Repeaters, Splitters Overview

The LTC4307IDD#PBF is a hot swappable, bidirectional 2-wire bus buffer manufactured by Analog Devices Inc. in an 8-lead DFN package. It isolates I/O card capacitance from the backplane during live insertion to prevent data corruption. Key electrical parameters include a supply voltage range of 2.3V to 5.5V and a typical supply current of 1mA at 5.5V. The device features a 60mV input-output offset voltage independent of load and supports I²C Fast Mode up to 600kHz. It includes a 30ms stuck bus timeout that triggers automatic clock pulse generation for recovery. Operating temperature range is -40°C to 85°C.

Signal Buffers, Repeaters, Splitters Feature Summary

• Provides bidirectional buffering while isolating input and output line capacitances.
• Features automatic stuck bus recovery with up to 16 generated clock pulses.
• Includes 1V precharge circuitry on SDA and SCL lines to minimize insertion disturbances.
• Offers high impedance pins when VCC is 0V for safe hot swapping.

Signal Buffers, Repeaters, Splitters Applications

• Servers
• RAID Systems
• ATCA

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific suffix IDD-1 against the official datasheet to confirm the exact operating temperature grade and package marking. Ensure the ordering information matches the required thermal characteristics and lead-free status defined by Analog Devices for this part number.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component for applications requiring isolation between backplane and card-side I2C or SMBus lines. It is suitable for systems needing protection against bus contention and stuck bus conditions during live board insertion. Verify that the system pull-up resistors allow the bus to rise at least 0.8V/μs to activate the rise time accelerators.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to the LTC4307 family of low offset hot swappable bus buffers. It is designed to replace direct connections in high-density backplane architectures where signal integrity and bus stability are critical during maintenance operations involving live card swaps.

Signal Buffers, Repeaters, Splitters Replacement Considerations

LTC4307CDD-1#PBF