Datasheet Details
| Part number | PCA9641 |
|---|---|
| Manufacturer | NXP Semiconductors |
| File Size | 1.63 MB |
| Description | 2-channel I2C-bus master arbiter |
| Datasheet |
 PCA9641 Datasheet
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General Description
The PCA9641 is a 2-to-1 I2C master demultiplexer with an arbiter function.
It is designed for high reliability dual master I2C-bus applications where correct system operation is required, even when two I2C-bus masters issue their commands at the same time.
Key Features
- 2-to-1 bidirectional master selector.
- Channel selection via I2C-bus.
- I2C-bus interface logic; compatible with SMBus standards.
- 2 active LOW interrupt outputs to master controllers.
- Active LOW reset input.
- Software reset.
- Four address pins allowing up to 112 different addresses.
- Arbitration active when two masters try to take the downstream I2C-bus at the same time.
- The winning master controls the downstream bus until it is done, as long as it is with.