The PCA9510A is a hot swappable I2C-bus and SMBus buffer that allows I/O card
inserTIon into a live backplane without corrupTIng the data and clock buses. Control
circuitry prevents the backplane from being connected to the card unTIl a stop command or
bus idle occurs on the backplane without bus contenTIon on the card. When the
connection is made, the PCA9510A provides bidirectional buffering, keeping the
backplane and card capacitances isolated.
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