| Part | PCA9541 |
|---|---|
| Description | 2-to-1 I2C-bus master selector |
| Manufacturer | NXP Semiconductors |
| Size | 403.66 KB |
The PCA9541 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.
| Part Number | Manufacturer | Description |
|---|---|---|
| PCA9543A | Texas Instruments | 2-Channel I2C Bus Switch |
| PCA9548 | NXP Semiconductors | 8-channel I2C switch with reset |
| PCA9540B | NXP Semiconductors | 2-channel I2C-bus multiplexer |
| PCA9544 | NXP Semiconductors | 4-channel I2C multiplexer and interrupt controller |
| PCA9544ABS | NXP Semiconductors | 4-channel I2C-bus multiplexer |
