LTC4304CMS#PBF

Signal Buffers, Repeaters, Splitters Overview

The LTC4304CMS#PBF is a hot swappable 2-wire bus buffer designed for I/O card insertion into live backplanes without data corruption. It provides bidirectional buffering for SDA and SCL lines, isolating backplane and card capacitances. The device features automatic stuck bus recovery by generating up to 16 clock pulses if the bus remains low for ≥30ms. It supports I²C, Fast-Mode, and SMBus standards with operation up to 400kHz. Supply voltage ranges from 2.7V to 5.5V, with an operating temperature of 0°C to 70°C. It includes 1V precharge on all SDA/SCL lines, ±15kV HBM ESD protection, and an ENABLE pin to gate connections.

Signal Buffers, Repeaters, Splitters Feature Summary

• Automatic disconnect and recovery of stuck busses via internal timer and clock generation
• Bidirectional buffering that isolates input and output capacitances during live insertion
• Rise-time accelerators controlled by ACC pin to support high capacitance loads
• Supply independent operation allowing bus pull-up voltages above or below VCC

Signal Buffers, Repeaters, Splitters Applications

• Servers
• RAID Systems
• Capacitance Buffer/Bus Extender

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific suffix CMS indicates the MSOP-10 package and C-grade temperature range. Confirm PBF denotes lead-free status. Check datasheet for absolute maximum ratings and thermal characteristics before integration.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when hot swapping I/O cards into live backplanes is required. Ensure the system operates within the 2.7V to 5.5V supply range. Verify that the bus capacitance and pull-up resistor values allow the rise-time accelerators to function correctly for signal integrity.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to the LTC4304 family of 2-wire bus buffers. It shares functionality with models like the LTC4304CDD but differs in package type. It complements other interface ICs such as the LTC4300A series for addressable buffering or level shifting applications.

Signal Buffers, Repeaters, Splitters Replacement Considerations

LTC4304CDD#PBF offers identical electrical performance in a DFN-10 package. Verify pinout compatibility and thermal dissipation requirements when substituting between MSOP and DFN packages.