PCA9541A - 2-to-1 I2C-bus master selector

Name: PCA9541A
SKU: PCA9541A-679131

NXP Semiconductors

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Datasheet Details

Part number	PCA9541A
Manufacturer	NXP Semiconductors
File Size	390.17 KB
Description	2-to-1 I2C-bus master selector
Datasheet	PCA9541A_NXPSemiconductors.pdf

PCA9541A Product details

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.

Features

2-to-1 bidirectional master selector.
I2C-bus interface logic; compatible with SMBus standards.
PCA9541A/01 powers up with Channel 0 selected.
PCA9541A/03 powers up with no channel selected and either master can take control of the bus.
Active LOW interrupt input.
2 active LOW interrupt outputs.
Active LOW reset input.
4 address pins allowing up to 16 devices on the I2C-bus.
Channel selection via I2C-bus.
Bus initialization/recovery function.

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Published: Jul 17, 2010 |