NCA9548A 8-Channel I²C Bus Switches

Nexperia NCA9548A 8-Channel I²C Bus Switches are octal bidirectional translating switches controlled through the I²C bus. The SCL/SDA upstream pair spreads to eight downstream pairs, or channels. The contents of the programmable control register decide whether an individual SCn/SDn channel or a mixture of channels can be selected. An active LOW reset input enables the Nexperia NCA9548A to recover from a condition in which one of the downstream I²C buses is stuck LOW. Pulling the RESET pin LOW resets the I²C bus state machine and deselects all channels, as does the internal power-on reset function.