I2C hot-swap buffer — the reason this part exists
The LTC4307CMS8#TRPBF is an I2C bus buffer and accelerator from Analog Devices, purpose-built for hot-swap card insertion on a live I2C backplane. Without it, plugging a card into an active bus glitches the clock and data lines, potentially locking up the entire I2C segment. This part isolates the card's bus capacitance from the backplane and actively accelerates rising edges through a pull-up current boost, keeping the bus within the 400 kHz data rate limit even with multiple cards connected.
8-MSOP package — rework-friendly with care
The 10 pF input capacitance per channel is low enough that it won't load the bus noticeably; the buffer's job is to hide the card's own capacitance from the backplane.