LTC4303CMS8#TRPBF

Signal Buffers, Repeaters, Splitters Overview

The LTC4303CMS8#TRPBF is a hot swappable 2-wire bus buffer manufactured by Analog Devices Inc. in an MSOP-8 package. It supports I²C and SMBus standards with a maximum operating frequency of 600 kHz. The device operates on a supply voltage range of 2.7 V to 5.5 V, drawing a typical supply current of 6 mA. It features automatic disconnection when the bus remains stuck low for 30 ms or more, followed by automatic clocking to recover the bus. Key electrical parameters include a propagation delay of 300 ns, an input capacitance of 10 pF, and an open-drain READY output.

Signal Buffers, Repeaters, Splitters Feature Summary

• Provides bidirectional buffering for SDA and SCL lines while isolating backplane and card capacitances during live insertion.
• Automatically disconnects the bus connection if data or clock lines remain stuck low for 30 ms or longer.
• Recovers stuck buses by generating up to 16 clock pulses on the SCLOUT line to release the bus condition.
• Includes rise-time accelerator circuitry to support larger pull-up resistors and meet system rise-time requirements.

Signal Buffers, Repeaters, Splitters Applications

• Hot board insertion into live backplanes without data corruption
• Servers requiring safe I/O card replacement
• RAID systems utilizing 2-wire bus architectures
• Capacitance buffering and bus extension applications

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging and lead-free compliance. Confirm the 'C' grade designation corresponds to the commercial temperature range of 0°C to 70°C. Ensure the MSOP-8 package matches your PCB footprint requirements. Cross-reference the manufacturer part number with official Analog Devices documentation to validate authenticity and revision status before procurement.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when designing systems that require hot swapping capabilities for I²C or SMBus peripherals. It is suitable for environments where live board insertion must not disturb existing bus transactions. Consider the 2.7 V to 5.5 V supply range compatibility with your system logic levels. Evaluate the need for automatic stuck-bus recovery versus manual intervention based on system reliability requirements.

Signal Buffers, Repeaters, Splitters Part Context

This device belongs to the LTC4303 series of hot swappable bus buffers. It is pin-compatible with the LTC4300A-1, facilitating design upgrades or replacements within existing layouts. The series focuses on protecting sensitive 2-wire communication lines from transients associated with physical connector engagement and electrical faults.

Signal Buffers, Repeaters, Splitters Replacement Considerations

The LTC4300A-1 is a pin-compatible alternative within the same family. Verify functional equivalence regarding bus isolation and recovery mechanisms. Check temperature grade specifications to ensure environmental compatibility. Review datasheet differences for any variations in timing characteristics or power consumption profiles.