Datasheet Details
| Part number | PCA9544A |
|---|---|
| Manufacturer | Texas Instruments |
| File Size | 1.96 MB |
| Description | Low Voltage 4-Channel I2C and SMBus Multiplexer |
| Datasheet |
 PCA9544A Datasheet
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General Description
The PCA9544A is a 4-channel, bidirectional translating multiplexer controlled via the I2C bus.
The SCL/SDA upstream pair fans out to four downstream pairs, or channels.
One SCL/SDA pair can be selected at a time, and this is determined by the contents of the programmable control register.
Key Features
- 1 1-of-4 Bidirectional translating switches.
- I2C Bus and SMBus compatible.
- Four active-low interrupt inputs.
- Active-low interrupt output.
- Three address pins, allowing up to eight devices on the I2C Bus.
- Channel selection via I2C Bus.
- Power up with all switch channels deselected.
- Low RON switches.
- Allows voltage-level translation between 1.8-V, 2.5-V, 3.3-V, and 5-V Buses.
- No glitch on power up.
- Sup.