The **PCA9546ADR** is an **I2C-bus multiplexer with reset** manufactured by Texas Instruments. It's a device that enables you to expand the number of I2C devices that can be connected to a single I2C bus by allowing multiple devices to share the same bus. This can be particularly useful in applications where there are more devices to communicate with than there are available I2C addresses.
Here's a summary of the key aspects of the PCA9546ADR:
**Functionality:**
- The PCA9546ADR is an 8-channel I2C multiplexer with reset capability.
- It can be used to establish independent connections between one upstream I2C bus and any combination of the 8 downstream I2C buses.
- The multiplexer enables communication with multiple I2C devices using a single I2C bus.
- The reset feature allows all downstream I2C devices to be reset together.
**Features:**
- 8-channel multiplexer with reset.
- Bidirectional I2C communication.
- I2C-bus and SMBus compatible.
- Low RON switches for minimum signal distortion.
- Active-low reset input for resetting all downstream buses.
- Compatible with 1.8V, 2.5V, 3.3V, and 5V logic levels.
- Low standby current consumption.
**Applications:**
- Industrial automation.
- Consumer electronics.
- Networking equipment.
- Embedded systems.
- Test and measurement equipment.
