Description:
This is a breakout board for the more convenient, 16-channel analog/digital Multiplexer/DEMUL tip Lexer CD74HC4067.
This chip is like a rotary switch – it lining Stretch for common pin (GMO schematic, SIG on the board) to one of 16 channel pins (CHANxx).
It works with both analogue and digital signals (the voltage cant be higher than VCC), and the connections function, in either direction.
To control it, connect 4 digital outputs to the chip address select pins (S0 S3 – and send it the binary address of the channel you want (see data sheet for details).
This allows you to connect up to 16 sensors to your system with only 5 pins.
Since the mux/demux also works with digital signals, you can use it to pipe TTL level serial or by of several devices. For example, you can use it for connecting the TX pins of the 16 devices to one RX pin on your microcontroller. You can then choose one of these 16 devices an old/worn pair.
If you need two way communication, you can create a second board their microcontroller TX LINE TO ROUTE 16 RX swap lines of the device.
Thanks to the multiple boards, you can create a similar arrangements for I2 °C, SPI, I2 °C, etc. to.
The built-in switches are bi-directional, supports voltages between the base, and VCC, have low "on" and "off leaking and to prevent crosstalk switch", Break Before Make. The board comes the chip pin "activate when powered, the common pin (all switches completely separate off will be).
Features:
(1) 2 V to 6 V Operation
2) on c resistance: 70 Ohm @ 4.5 V
3) 6 ns break before make @ 4.5 V
4. wide operating temperature range: -55 to 125
Box Contents:
3 * CD74HC4067 CMOS 16 Channel Digital Analogue Multiplexer Breakout Module