LTC4300A-3IDD#PBF

Signal Buffers, Repeaters, Splitters Overview

The LTC4300A-3IDD#PBF is a hot swappable 2-wire bus buffer manufactured by Analog Devices Inc. It supports bidirectional buffering for SDA and SCL lines, allowing 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 accelerators that boost pull-up currents during positive transitions. The component operates up to 400kHz, compatible with I2C, Fast Mode, and SMBus standards. It is housed in an 8-lead (3mm × 3mm) plastic DFN package.

Signal Buffers, Repeaters, Splitters Feature Summary

• Hot swappable 2-wire bus buffer preventing data corruption during live board insertion
• Bidirectional buffering isolating backplane and card capacitances
• Level translation capability between 3.3V and 5V supply rails
• Rise time accelerator circuitry enabling weaker DC pull-up currents

Signal Buffers, Repeaters, Splitters Applications

• Servers
• Desktop computers
• Hot board insertion systems

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific ordering suffix IDD#PBF corresponds to the industrial temperature grade (-40°C to 85°C) and the 8-lead DFN package configuration. Confirm that the lead-free finish matches the required environmental compliance standards for the target assembly process. Ensure the part marking LBHG aligns with the manufacturing date code requirements.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this model when an industrial temperature range is required alongside the 3mm x 3mm DFN footprint. The IDD suffix designates the -40°C to 85°C operational range, distinguishing it from the commercial CDD variant. Verify that the system voltage levels fall within the 2.7V to 5.5V specification for both backplane and card sides.

Signal Buffers, Repeaters, Splitters Part Context

This component belongs to the LTC4300A family of hot swappable bus buffers. It shares functional similarities with the LTC4300A-1 and LTC4300A-2 but differs in its specific enable logic and level shifting characteristics. The device serves as a critical interface element in systems requiring safe insertion of peripheral cards into active backplanes while maintaining signal integrity across different voltage domains.

Signal Buffers, Repeaters, Splitters Replacement Considerations

LTC4300A-3CDD#PBF