PCA9540B

2-channel I2C-bus multiplexer

NXP

PCA9540B Features

* 1-of-2 bidirectional translating multiplexer

* I2C-bus interface logic; compatible with SMBus standards

* Channel selection via I2C-bus

* Power-up with all multiplexer channels deselected

* Low Ron switches

* Allows voltage level translation between 1.8 V, 2.5 V, 3.3 V and

PCA9540B General Description

The PCA9540B is a 1-of-2 bidirectional translating multiplexer, controlled via the I2C-bus. The SCL/SDA upstream pair fans out to two 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. A power-on res.

PCA9540B Datasheet (346.64 KB)