9544A Datasheet (NXP) - 4-channel I2C-bus multiplexer

9544A, 4-channel I2C-bus multiplexer

The PCA9544A is a 1-of-4 bidirectional translating multiplexer, controlled via the I2C-bus.

The SCL/SDA upstream pair fans out to four 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.

Four interrup

9544A Features

* 1-of-4 bidirectional translating multiplexer

* I2C-bus interface logic; compatible with SMBus

* 4 active LOW interrupt inputs

* Active LOW interrupt output

* 3 address pins allowing up to 8 devices on the I2C-bus

* Channel selection via I2C-bus

* Power-up with all multi