PCA9543 Datasheet (NXP) - 2-channel I2C switch

PCA9543, 2-channel I2C switch

The PCA9543 is a bi-directional 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 int

PCA9543 Features

* 1-of-2 bi-directional translating switches

* I2C interface logic; compatible with SMBus standards

* 2 Active LOW Interrupt Inputs

* Active LOW Interrupt Output

* Active LOW Reset Input

* 2 address pins allowing up to 4 devices on the I2C-bus