LTC4304CDD#TRPBF

Signal Buffers, Repeaters, Splitters Overview

The LTC4304CDD#TRPBF is a hot swappable 2-wire bus buffer manufactured by Analog Devices Inc. It supports I2C, I2C Fast-Mode, and SMBus standards with operation up to 400kHz. The device operates on a supply voltage (VCC) ranging from 2.7V to 5.5V and draws a typical supply current of 8mA at 5.5V. It features automatic disconnection when the bus remains stuck low for 30ms or longer, accompanied by an open-drain FAULT output. The component utilizes a 10-lead plastic DFN package measuring 3mm x 3mm and is rated for commercial operating temperatures between 0°C and 70°C.

Signal Buffers, Repeaters, Splitters Feature Summary

• Provides bidirectional buffering for SDA and SCL lines while isolating backplane and card capacitances during live insertion.
• Automatically recovers stuck buses by generating clock pulses if data or clock lines remain low for extended periods.
• Includes rise-time accelerators that boost pull-up currents to maintain signal integrity despite high bus capacitance.
• Offers logic level compatibility allowing bus pull-up voltages to be higher or lower than the VCC supply.

Signal Buffers, Repeaters, Splitters Applications

• Hot board insertion into live backplanes
• Servers requiring safe I/O card replacement
• RAID systems utilizing hot-swappable drives
• Capacitance buffering and bus extension

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific ordering suffix #TRPBF confirms the tape and reel packaging format required for automated assembly processes. Ensure the C grade designation matches the intended commercial temperature range requirements. Confirm RoHS compliance status aligns with environmental regulations applicable to the manufacturing region. Cross-reference the manufacturer part number against official distributor catalogs to validate authenticity and traceability.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when designing systems that require isolation between backplane and card-side I2C or SMBus networks. It is suitable for applications involving staggered connectors where power pins make contact before signal lines. Consider the rise-time accelerator feature if the system demands large pull-up resistors to minimize power consumption while maintaining fast signal transitions. Verify that the maximum operating frequency requirement does not exceed the specified limits for the selected package type.

Signal Buffers, Repeaters, Splitters Part Context

This device belongs to the LTC4304 series of hot swappable bus buffers. It shares functional similarities with the LTC4300 and LTC4301 but offers distinct automatic recovery mechanisms for stuck bus conditions. The DFN package variant provides a compact footprint compared to traditional MSOP options, facilitating dense PCB layouts in modern server and storage architectures.

Signal Buffers, Repeaters, Splitters Replacement Considerations

LTC4304CDD#PBF