LTC4300A-3IMS8#TRPBF

Signal Buffers, Repeaters, Splitters Overview

The LTC4300A-3IMS8#TRPBF is a hot swappable 2-wire bus buffer with level shifting capabilities, manufactured by Analog Devices Inc. It operates within a supply voltage range of 2.7V to 5.5V on both VCC and VCC2 pins. The device supports I2C, I2C Fast Mode, and SMBus standards up to 400kHz. It features bidirectional buffering for SDA and SCL lines, preventing data corruption during live board insertion. Key electrical parameters include a precharge voltage of 1V (typical), shutdown supply current of 20µA (max), and operating temperature range of -40°C to +85°C. The component is housed in an 8-lead MSOP package.

Signal Buffers, Repeaters, Splitters Feature Summary

• Provides bidirectional buffering for SDA and SCL lines while isolating backplane and card capacitances.
• Prevents signal corruption during live insertion and removal from backplanes through 1V precharge circuitry.
• Incorporates rise time accelerator circuitry to allow weaker DC pull-up currents while meeting rise time requirements.
• Features a CMOS threshold ENABLE pin that forces the part into low current mode and isolates the card from the backplane.

Signal Buffers, Repeaters, Splitters Applications

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

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging when sourcing this component. Confirm the IMS8 suffix corresponds to the industrial temperature grade (-40°C to +85°C) and MSOP package type required for your design. Ensure compatibility with the manufacturer's lead-free finish specifications before finalizing procurement orders.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when designing systems requiring hot-swappable I/O cards connected to a live backplane. It is suitable for applications needing level translation between different supply voltages on the card and backplane sides. Consider its rise time acceleration feature if system pull-up resistors must be high to minimize power consumption while maintaining signal integrity at speeds up to 400kHz.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to the LTC4300A series of hot swappable 2-wire bus buffers. It shares functional similarities with the LTC4300A-1 and LTC4300A-2 but offers specific level shifting capabilities between 3.3V and 5V supplies. The series is designed to maintain data integrity during dynamic connection events in I2C and SMBus environments.

Signal Buffers, Repeaters, Splitters Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult Analog Devices marketing for parts specified with wider operating temperature ranges or alternative package options such as the DFN variant.