PCA9545A Datasheet - Texas Instruments

PCA9545A Low Voltage 4-channel I2C and SMbus Switch

The PCA9545A is a quad bidirectional translating switch controlled via the I2C bus. The SCL/SDA upstream pair fans out to four downstream pairs, or channels. Any individual SCn/SDn channel or combination of channels can be selected, determined by the contents of the programmable control register. Fo.

PCA9545A Features

* 1 1-of-4 Bidirectional Translating Switches

* I2C Bus and SMBus Compatible

* Four Active-Low Interrupt Inputs

* Active-Low Interrupt Output

* Active-Low Reset Input

* Two Address Terminals, Allowing up to Four Devices on the I2C Bus

* Channel

PCA9545A Datasheet (1.92 MB)