PCA9540B
2-channel I2C-bus multiplexer
Rev. 7.1 — 19 January 2018
Product data sheet
1. 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...