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9544A

NXP
Part Number 9544A
Manufacturer NXP
Description 4-channel I2C-bus multiplexer
Published Mar 4, 2021
Detailed Description PCA9544A 4-channel I2C-bus multiplexer with interrupt logic Rev. 5 — 23 April 2014 Product data sheet 1. General des...
Datasheet PDF File 9544A PDF File

9544A
9544A

Overview
PCA9544A 4-channel I2C-bus multiplexer with interrupt logic Rev.
5 — 23 April 2014 Product data sheet 1.
General description The PCA9544A is a 1-of-4 bidirectional translating multiplexer, controlled via the I2C-bus.
The SCL/SDA upstream pair fans out to four 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.
Four interrupt inputs, INT0 to INT3, one for each of the SCx/SDx downstream pairs, are provided.
One interrupt output, INT, which acts as an AND of the four interrupt inputs, is provided.
A power-on reset function puts the registers in their default state and initializes the I2C-bus ...


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