LTC4300A-3IMS8#PBF

Signal Buffers, Repeaters, Splitters Overview

The LTC4300A-3IMS8#PBF is a hot swappable 2-wire bus buffer manufactured by Analog Devices Inc. It supports bidirectional buffering for SDA and SCL lines, enabling I/O card insertion into live backplanes without data corruption. The device provides level translation between 3.3V and 5V supplies, with both VCC and VCC2 operating within a range of 2.7V to 5.5V. It features a CMOS threshold ENABLE pin for low current isolation and rise time accelerator circuitry that allows the use of weaker DC pull-up currents while meeting rise time requirements. The component operates up to 400kHz and includes a 1V precharge function on all SDA and SCL lines to minimize bus disturbances during connection.

Signal Buffers, Repeaters, Splitters Feature Summary

• Hot swappable 2-wire bus buffer allowing live board insertion without data corruption
• Bidirectional buffering isolates backplane and card capacitances
• Level translation capability between 3.3V and 5V supply rails
• Rise time accelerator circuitry enables use of weaker DC pull-up currents

Signal Buffers, Repeaters, Splitters Applications

• Servers
• Desktop computers
• Hot board insertion systems
• Capacitance buffering and bus extension

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific ordering suffix IMS8#PBF corresponds to the 8-lead plastic MSOP package and industrial temperature grade (-40°C to 85°C). Confirm RoHS compliance status through official manufacturer documentation or authorized distributors before procurement. Ensure the part marking matches the specified lead-free finish identifiers.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when designing systems requiring hot swap capabilities for I2C or SMBus interfaces. It is suitable for applications needing isolation between backplane and card capacitances. Ensure the system pull-up resistors are selected to provide a positive slew rate of at least 1.25V/µs to activate the boost pull-up currents effectively.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to the LTC4300A family of hot swappable bus buffers. It shares functional similarities with the LTC4300A-1 and LTC4300A-2 but offers specific level translation features. The device is designed to preserve data integrity under hot swap conditions while providing capacitive buffering and rise time acceleration for reliable communication.

Signal Buffers, Repeaters, Splitters Replacement Considerations

Public confirmed substitute part numbers include LTC4300A-1IMS8#PBF and LTC4300A-2IMS8#PBF.