PCA9544 Datasheet (NXP) - 4-channel I2C multiplexer and interrupt controller

PCA9544, 4-channel I2C multiplexer and interrupt controller

The PCA9544 is a 1-of-4 bi-directional 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

PCA9544 Features

* 1-of-4 bi-directional translating multiplexer

* Channel selection via I2C bus

* Operating supply voltage 2.5 to 3.6 V

* Operating temperature range 0°C to 70°C

* Power-up with all multiplexer channels deselected

* 3 address pins, allowing up to 8 de