PCA9542A—带中断的双通道I2C多路复用器产品数据手册

The PCA9542A is a 1-of-2 bidirecTIonal translaTIng mulTIplexer, controlled via the I2C-bus.

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

Only one SCx/SDx channel is selected at a TIme, determined by the contents of the

programmable control register. Two interrupt inputs, INT0 and INT1, one for each of the

SCx/SDx downstream pairs, are provided. One interrupt output, INT, which acts as an

AND of the two interrupt inputs, is provided.