Part Number
|
PA9544A |
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
|
PA9544A
|
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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