LTC4301LIMS8#PBF

Signal Buffers, Repeaters, Splitters Overview

The LTC4301LIMS8#PBF is a hot swappable, supply-independent 2-wire bus buffer manufactured by Analog Devices Inc. It supports I2C and SMBus standards with operation up to 600 kHz. The device translates low voltage signals (down to 1V) to standard logic rails while isolating input and output capacitances. Key electrical parameters include a supply voltage range of 2.7V to 5.5V, a typical supply current of 4.5 mA at 5.5V, and an input capacitance of 10 pF. It features 10kV HBM ESD protection and operates within a temperature range of -40°C to +85°C.

Signal Buffers, Repeaters, Splitters Feature Summary

• Provides bidirectional buffering for SDA and SCL lines while isolating backplane and card capacitances.
• Enables live board insertion and removal without data or clock bus corruption.
• Translates signal levels from pull-up voltages as low as 1V to standard 3.3V and 5V logic rails.

Signal Buffers, Repeaters, Splitters Applications

• Hot board insertion into live backplanes
• Servers and desktop computers
• Capacitance buffering and bus extension

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific suffix #PBF confirms lead-free compliance and RoHS status. Confirm the IMS8 package designation matches the required MSOP-8 footprint. Ensure the operating temperature grade corresponds to the LI variant (-40°C to +85°C). Cross-reference the manufacturer part number with official Analog Devices documentation to validate authenticity and revision history before procurement.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when supply-independent level translation is required for I2C or SMBus interfaces. It is suitable for systems where input pull-up voltages may be significantly lower than the device's VCC supply. Consider the 8-pin MSOP package for space-constrained designs requiring surface mount installation. Verify that the maximum operating frequency requirement does not exceed 600 kHz.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to the LTC4301L family of hot swappable bus buffers. It shares functional similarities with the LTC4300A series but offers supply-independent operation allowing for wider voltage translation ranges. The IMS8 suffix denotes the 8-lead plastic MSOP package variant, distinct from the DFN package options available in the same product line.

Signal Buffers, Repeaters, Splitters Replacement Considerations

Public confirmed substitute part numbers are not identified in the provided documentation. Designers should consult Analog Devices for direct replacements or evaluate the broader LTC4301 family members for pin-compatible alternatives if necessary.