PCA9543A PCA9543B PCA9543C—I2C多路复用器和开关产品数据手册

The PCA9543A/43B/43C is a bidirecTIonal translaTIng switch, controlled by the I2C-bus.

The SCL/SDA upstream pair fans out to two downstream pairs, or channels. Any

individual SCx/SDx channels or combinaTIon of channels can be selected, determined by

the contents of the programmable control register. Two interrupt inputs, INT0 and INT1,

one for each of the downstream pairs, are provided. One interrupt output, INT, which acts

as an AND of the two interrupt inputs, is provided.