Nexperia NCA9547A 8-Channel I2C Bus Multiplexers are octal bidirectional translating devices managed by the I2C bus. The SCL/SDA upstream pair spans eight downstream pairs, or channels. Only one SCn/SDn channel can be selected at a time, specified by the contents of the programmable control register. The device powers up with channel zero connected, enabling immediate communication between the controller and downstream devices (targets) on that channel.
