Features: 1. It is a module for the very handy 16-Channel Analog / Digital Multiplexer / Demultiplexer CD74HC4067. 2. This chip is like a rotary switch - it internally routes the common pin to one of 16 channel pins (CHANxx). 3. It is suitable for both digital and analog signals (voltage cannot be higher than VCC) and the connection works in either direction. 4. To control it, connect four digital outputs to the chip's address selection pin (S0-S3) and send it to the binary address of the channel you want. 5. This allows you to connect up to 16 sensors to your system using only 5 pins. 6. Since the mux/demux also works with digital signals, you can use it to pipe TTL-level serial data to or from multiple devices. For example, you could use it to connect the TX pins of 16 devices to one RX pin on your microcontroller. You can then select any one of those 16 devices to listen to. Specification: Condition: 100% Brand New Item Type: Digital Analog Multiplexer Operating Voltage: 2V-6V "On" Resistance: 70 Ohms @ 4.5V Wide Operating Temperature Range: -55 ° C to 125 ° C Package List: 2 * Digital Analog Multiplexer 1、It is a module for the very handy 16-Channel Analog / Digital Multiplexer / Demultiplexer CD74HC4067. 2、This chip is like a rotary switch - it internally routes the common pin to one of 16 channel pins (CHANxx). 3、It is suitable for both digital and analog signals (voltage cannot be higher than VCC) and the connection works in either direction. 4、To control it, connect four digital outputs to the chip's address selection pin (S0-S3) and send it to the binary address of the channel you want. 5、This allows you to connect up to 16 sensors to your system using only 5 pins.