The PCA9546AD is a 4-channel I2C-bus Switch with reset controlled via the I2C-bus. The SCL/SDA upstream pair fans out to four downstream pairs or channels. Any individual SCx/SDx channel or combination of channels can be selected, determined by the contents of the programmable control register. An active low reset input allows the switch to recover from a situation where one of the downstream I2C-buses is stuck in a low state. Pulling the RESET pin low resets the I2C-bus state machine and causes all the channels to be deselected as does the Internal power-ON reset function.
Active low reset input
3 Address pins allowing up to 8 devices on the I2C-bus
(EN)
