PCA9546ABS,118 Description

The PCA9546ABS,118 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 SCx/SDx channel or combination of media can be selected, determined by the contents of the programmable control register. An active LOW reset input allows the PCA9546ABS,118 to recover from a situation where one of the downstream I2C buses is stuck in a LOW state.

PCA9546ABS,118 Features

1-of-4 bidirectional translating switches

I²C-bus interface logic; compatible with SMBus standards

Active LOW reset input

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

Channel selection via I2C-bus, in any combination

Power-up with all switch channels deselected

Low Ron switches

Allows voltage level translation between 1.8 V, 2.5 V, 3.3 V, and 5 V buses

No glitch on the power-up

PCA9546ABS,118 Applications

Automotive 

Infotainment & cluster 

Communications equipment 

Wired networking 

Industrial 

Building automation