The IC component PCA9545AD,118 is a 4-channel I2C multiplexer/demultiplexer integrated circuit. It enables multiple devices to share a single I2C bus by providing a way to switch between different I2C buses.
Key Features:
1. 4-Channel Multiplexer/Demultiplexer: The PCA9545AD,118 allows up to four different I2C buses to be connected to a common I2C interface. It acts as a switch, enabling the selection of a specific I2C bus for communication.
2. I2C-Compatible: It is fully compatible with the I2C serial communication protocol. This enables it to connect with other I2C devices seamlessly and transfer data at high speeds.
3. Address Selection: The component has an internal address decoder that facilitates the selection of the desired I2C bus. A control register can be written to specify which channel is active, ensuring communication with the desired device.
4. Interrupt Function: The PCA9545AD,118 also supports an interrupt output pin that can be used to notify the master device when the selected channel is changed. This feature simplifies the monitoring of bus switching events without constantly polling the component.
5. Low Power Consumption: It is designed to consume low power, making it suitable for battery-powered applications. The standby current is very low, ensuring minimal energy consumption when the device is not actively switching channels
