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PCA9541A

NXP Semiconductors
Part Number PCA9541A
Manufacturer NXP Semiconductors
Description 2-to-1 I2C-bus master selector
Published Jul 17, 2010
Detailed Description www.DataSheet4U.com PCA9541A 2-to-1 I2C-bus master selector with interrupt logic and reset Rev. 03 — 16 July 2009 Produ...
Datasheet PDF File PCA9541A PDF File

PCA9541A
PCA9541A

Overview
www.
DataSheet4U.
com PCA9541A 2-to-1 I2C-bus master selector with interrupt logic and reset Rev.
03 — 16 July 2009 Product data sheet 1.
General description The PCA9541A is a 2-to-1 I2C-bus master selector designed for high reliability dual master I2C-bus applications where system operation is required, even when one master fails or the controller card is removed for maintenance.
The two masters (for example, primary and back-up) are located on separate I2C-buses that connect to the same downstream I2C-bus slave devices.
I2C-bus commands are sent by either I2C-bus master and are used to select one master at a time.
Either master at any time can gain control of the slave devices if the other...


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