LTC4309IDE#TRPBF

Signal Buffers, Repeaters, Splitters Overview

The LTC4309IDE#TRPBF is a hot swappable 2-wire bus buffer designed for I/O card insertion into live backplanes. It provides bidirectional buffering to isolate input and output capacitances, preventing data corruption during insertion. The device supports level shifting between 2.5V, 3.3V, and 5V busses with a typical offset voltage of 60mV. It features a 30ms stuck bus timeout that triggers a FAULT signal and optional automatic recovery via clock pulses and stop bits. The component operates within a supply voltage range of 2.3V to 5.5V and includes rise-time accelerators controlled by the ACC pin.

Signal Buffers, Repeaters, Splitters Feature Summary

• Prevents SDA and SCL line corruption during live board insertion and removal from backplanes
• Provides optional disconnect capability when the bus remains stuck low for extended periods
• Isolates input SDA and SCL lines from output lines to separate card and backplane capacitances
• Compatible with I2C, I2C Fast-Mode, and SMBus protocols

Signal Buffers, Repeaters, Splitters Applications

• Servers requiring hot-swappable I/O cards
• RAID systems needing reliable bus connectivity
• AdvancedTCA (ATCA) architectures
• Capacitance buffering and bus extension applications

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific ordering suffix #TRPBF confirms the tape and reel packaging format required for automated assembly processes. Confirm the 'I' grade designation matches the required industrial temperature range specifications for your target environment before finalizing procurement orders.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when designing systems that require isolation between backplane and card-side bus capacitances. Ensure the application utilizes staggered connectors or external control logic to manage the ENABLE pin state during physical insertion to maximize protection against transient disturbances on the data lines.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to the LTC4309 family of level-shifting bus buffers manufactured by Analog Devices Inc. It is specifically engineered for high-reliability environments where live insertion of hardware components must not disrupt ongoing system operations or corrupt communication signals on the 2-wire bus infrastructure.

Signal Buffers, Repeaters, Splitters Replacement Considerations

Consult manufacturer documentation for direct substitutes. Verify compatibility regarding package dimensions, pin configurations, and electrical characteristics if considering alternative vendors.