LTC4303IMS8#PBF

Signal Buffers, Repeaters, Splitters Overview

The LTC4303IMS8#PBF is a hot swappable 2-wire bus buffer manufactured by Analog Devices Inc. in an MSOP-8 package. It supports I²C, Fast-Mode, and SMBus standards with operation up to 400 kHz. The device operates on a supply voltage (VCC) ranging from 2.7 V to 5.5 V. Key electrical parameters include a typical supply current of 6 mA at 5.5 V, a precharge voltage of 1 V on SDA/SCL lines, and a bus stuck low timeout of 30 ms. It features ±15 kV HBM ESD protection and isolates input/output capacitances during live board insertion.

Signal Buffers, Repeaters, Splitters Feature Summary

• Provides automatic disconnection and recovery for stuck buses by generating clock pulses when data or clock lines remain low for extended periods.
• Prevents signal corruption during live insertion by precharging SDA and SCL lines to 1 V before establishing connection.
• Includes rise-time accelerator circuitry that boosts pull-up current to maintain signal integrity with larger resistors or higher capacitance loads.

Signal Buffers, Repeaters, Splitters Applications

• Servers requiring hot-swappable I/O card insertion
• RAID systems utilizing backplane connectivity
• Capacitance buffering and bus extension in embedded architectures

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific suffix #PBF confirms lead-free compliance and RoHS status. Confirm the IMS8 designation matches the required MSOP-8 surface mount package dimensions. Ensure the 'I' grade meets the -40°C to +85°C industrial temperature range requirements for your deployment environment.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when bidirectional isolation between backplane and card capacitances is necessary. It is suitable for applications requiring automatic stuck-bus recovery without external microcontroller intervention. Consider the ENABLE pin functionality if active connection control via a processor is required.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to the LTC4303 family of 2-wire bus buffers. It is pin-compatible with the LTC4300A-1. The IMS8 variant specifically denotes the MSOP-8 plastic package, distinct from the DFN-8 option available in the same series.

Signal Buffers, Repeaters, Splitters Replacement Considerations

LTC4300A-1IMS8#PBF is a pin-compatible alternative within the same product family offering similar hot swap capabilities.