Datasheet Details
| Part number | PCA9543A |
|---|---|
| Manufacturer | Texas Instruments |
| File Size | 1.02 MB |
| Description | 2-Channel I2C Bus Switch |
| Datasheet |
 PCA9543A Datasheet
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General Description
The PCA9543A is a dual bidirectional translating switch controlled by the I2C bus.
The SCL/SDA upstream pair fans out to two downstream pairs, or channels.
Either individual SCn/SDn channel or both channels can be selected, determined by the contents of the programmable control register.
Key Features
- 1 1-of-2 Bidirectional Translating Switches.
- I2C Bus and SMBus Compatible.
- Two Active-Low Interrupt Inputs.
- Active-Low Interrupt Output.
- Active-Low Reset Input.
- Two Address Pins Allowing up to Four PCA9543A Devices on the I2C Bus.
- Channel Selection Via I2C Bus, in Any Combination.
- Power-up With All Switch Channels Deselected.
- Low RON Switches.
- Allows Voltage-Level Translation Between 1.8-V, 2.5-V, 3.3-V, an.