TECNOIOT 2pcs CD74HC4067 16-Channel Analog Digital Multiplexer Breakout Board Module

X2pcs CD74HC4067 16-Channel Analog Digital Multiplexer Breakout Board Module for Arduino DESCRIPTION: -This is a breakout board for the very handy 16-Channel Analog/Digital Multiplexer/Demultiplexer CD74HC4067. -This chip is like a rotary switch - it internally routes the common pin (COM in the schematic, SIG on the board)to one of 16 channel pins (CHANxx). -It works with both digital and analog signals (the voltage can't be higher than VCC), and the connections function in either direction. -To control it, connect 4 digital outputs to the chip's address select pins (S0-S3), and send it the binary address of the channel you want (see the datasheet for details). -This allows you to connect up to 16 sensors to your system using only 5 pins! -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. If you want two-way communications, you can add a second board to route your microcontroller's TX line to 16 device's RX lines. -By using multiple boards, you can create similar arrangements for I2C, SPI, etc. -The internal switches are bidirectional, support voltages between ground and VCC, have low on resistance and low off leakage, and to prevent crosstalk, perform break-before-make switching. -The board also breaks out the chip's enable pin, which when driven high, will completely disconnect the common pin (all switches off). PACKET CONTAINS: 2pcs x CD74HC4067 16-Channel Analog Digital Multiplexer