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Abstract

-keyword">of this sort really just acts as a 16 to one 1 switch;</pre></div><div id="7428"><pre>- 4 digital pins are used to set HIGH or LOW, in a binary fashion (0–15) to determine what pin “SIG” is connected to;</pre></div><div id="0dd7"><pre>- Bringing all 4 pins LOW would switch the CD74HC4067 to channel 0 (so SIG and C0 would be connected);</pre></div><div id="bef5"><pre>- Bringing them all HIGH would switch it to 15 (so SIG and C15 would be connected);</pre></div><div id="098d"><pre>- The EN pin control when the mux is enabled or disabled; </pre></div><div id="b29e"><pre>- The EN pin is a kill switch: pull it up to 5v to disable all channels, and ground it to enable them;</pre></div><div id="209e"><pre>- The CD74HC4067 is capable of more than reading analog signals, It can be uses in either direction;</pre></div><div id="71f7"><pre>- So let us put this to good use:

if you needed to control 16 relays, just connect SIG to 5v, and then be able to switch the 5v to one of 16 channel pins
if you had 16 RFID readers that output serial just connect the SIG pin of the CD74HC4067 to digital 0 on the arduino (Serial RX pin) and the serial out of an RFID reader to one of the channels and be able to read from all 16 RFID readers;</pre></div><div id="98b5"><pre>- Open you data sheet and consider:
“DC Electrical Specifications” — minimum voltage that can be considered as a HIGH and the maximum for a LOW depending on your supply voltage;
“ON” resistance — that is the resistance in Ohms (O) between one of the sixteen inputs/outputs

Options

and the common pin;

</pre></div>Consider the pinout diagram from the datasheet:<h2 id="c754">Pinout</h2><figure id="2fed"><img src="https://cdn-images-1.readmedium.com/v2/resize:fit:800/1*A0HQnOWcgvIvADvXzE4LHg.png"><figcaption>Fig 2. 74HC4067 pinout</figcaption></figure><h2 id="9b42">How to Soldering</h2>[TODO: VID SOLDERING GOES HERE!]Fig 3. Lab video w/ HC4067<h2 id="59be">The Fritz</h2><figure id="60b0"><img src="https://cdn-images-1.readmedium.com/v2/resize:fit:800/1*8BzpTuMz8bwb-NyUyNX1TA.png"><figcaption>Fig 4. CD74HC4067 Analogue/Digital Module MUX-Breakout-16-Channel-DeMultiplexer</figcaption></figure><div id="2938"><pre>Demultiplexer is a combinational logic circuit designed to switch one common input line to one of several separate output line;</pre></div><div id="8637"><pre>Multiplexer is a combinational logic circuit designed to switch one of several input lines to a single common output line;</pre></div><h2 id="155a">The Code</h2> <figure id="2720"> <div> <div>

            <iframe class="gist-iframe" src="/gist/giljr/4c84d07e3a27d36b85fc5ca55bf96a1b.js" allowfullscreen="" frameborder="0" height="undefined" width="undefined">
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        </div>
    </figure></iframe></div></div></figure><h2 id="d2d1">The video</h2><p id="8965">[TODO: VID 1 GOES HERE!]</p><p id="c758">Fig 5. Lab video w/ HC4067</p><h2 id="c84b">Credits &amp; References</h2><div id="6a62" class="link-block">
      <a href="https://bildr.org/2011/02/cd74hc4067-arduino/">
        <div>
          <div>
            <h2>bildr " Muxing Around With The CD74HC4067 + Arduino</h2>
            <div><h3>Have you ever found yourself running out of pins to read an array of analog sensors? Don't worry, you're not alone, it…</h3></div>
            <div><p>bildr.org</p></div>
          </div>
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            <div style="background-image: url(https://miro.readmedium.com/v2/resize:fit:320/0*eX3bMjda7x2UPXui)"></div>
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      </a>
    </div><div id="336a" class="link-block">
      <a href="https://tronixstuff.com/2013/08/05/part-review-74hc4067-16-channel-analog-multiplexerdemultiplexer/">
        <div>
          <div>
            <h2>Tutorial - 74HC4067 16-Channel Analog Multiplexer Demultiplexer</h2>
            <div><h3>Now and again there's a need to expand the I/O capabilities of your chosen microcontroller, and instead of upgrading…</h3></div>
            <div><p>tronixstuff.com</p></div>
          </div>
          <div>
            <div style="background-image: url(https://miro.readmedium.com/v2/resize:fit:320/0*LllHkvQ_IHy94Fkm)"></div>
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      </a>
    </div><div id="3aa2" class="link-block">
      <a href="http://mayhewlabs.com/products">
        <div>
          <div>
            <h2>Products</h2>
            <div><h3>Edit description</h3></div>
            <div><p>mayhewlabs.com</p></div>
          </div>
          <div>
            <div style="background-image: url(https://miro.readmedium.com/v2/resize:fit:320/0*_Y6c7BprsLWBlXIO)"></div>
          </div>
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      </a>
    </div><p id="70c2"><a href="https://www.sparkfun.com/products/9056">SparkFun Analog/Digital MUX Breakout — CD74HC4067</a> by <a href="https://www.sparkfun.com/">https://www.sparkfun.com</a></p><p id="5bf5">Datasheet <a href="https://www.sparkfun.com/datasheets/IC/cd74hc4067.pdf">High-Speed CMOS Logic 16-Channel Analog Multiplexer/Demultiplexer</a> by Texas Instruments</p><p id="6c31"><a href="https://www.electronics-tutorials.ws/combination/comb_2.html">The Multiplexer</a> by <a href="https://www.electronics-tutorials.ws/">https://www.electronics-tutorials.ws</a></p><p id="4eda"><a href="https://www.electronics-tutorials.ws/combination/comb_3.html">The Demultiplexer</a> by <a href="https://www.electronics-tutorials.ws/">https://www.electronics-tutorials.ws</a></p><figure id="3682"><img src="https://cdn-images-1.readmedium.com/v2/resize:fit:800/1*MCP-dWpRLkJ1yhD3xiVV2A.jpeg"><figcaption></figcaption></figure></article></body>

74HC4067 — DeMux For Arduino

A multiplexer of this sort really just acts as a 16 to one 1 switch — Ardu_Serie # 83

Hi, in this post we're gonna talk about this 74HC4067 board:

Fig 1. 16-Channel Analog Multiplexer/Demultiplexer for Arduino

At this point, you should download the datasheet, as we refer to it through the course of the article

Specifications

(from https://www.sparkfun.com/products/9056)

2V to 6V operation
“On” resistance: 70 Ohms @ 4.5V
6ns break-before-make @ 4.5V
Wide operating temperature range: -55C to 125C

Here are the summary notes from my internet research:

Notes

-You can consider the 74HC4067 to be a digital replacement to those rotary switches that allow you to select one of sixteen positions;

- 74HC4067 can operate on voltages between 2 and 6V DC (74HCT4067 it can only work on 4.5~5.5V DC);

- The CD74HC4067 is a 16-Channel Analog Multiplexer/Demultiplexer;

- CD74HC4067 is a super simple to use bidirectional mux that can make your life a lot easier;

- It's a must having if you ate running out of pins to read an array of analog sensors;

- Instead of upgrading your microcontroller, with this board you can to expand the I/O capabilities of your chosen microcontroller;

- It’s an IC that can direct a flow of current in either direction from one pin to any one of sixteen pins;

- The part itself is available in through-hole and surface mount versions;

- can help multiply the amount of pins you have;

- it is easy to connect to your arduino or other microcontroller;

- it allows you to do is use 4 digital pins, to control the flow of one pin to 16 others;

- It can actually be used in either direction, and even with serial or other digital interfaces;

- A multiplexer of this sort really just acts as a 16 to one 1 switch;

- 4 digital pins are used to set HIGH or LOW, in a binary fashion (0–15) to determine what pin “SIG” is connected to;

- Bringing all 4 pins LOW would switch the CD74HC4067 to channel 0 (so SIG and C0 would be connected);

- Bringing them all HIGH would switch it to 15 (so SIG and C15 would be connected);

- The EN pin control when the mux is enabled or disabled;

- The EN pin is a kill switch: pull it up to 5v to disable all channels, and ground it to enable them;

- The CD74HC4067 is capable of more than reading analog signals, It can be uses in either direction;

- So let us put this to good use:
- if you needed to control 16 relays, just connect SIG to 5v, and then be able to switch the 5v to one of 16 channel pins
- if you had 16 RFID readers that output serial just connect the SIG pin of the CD74HC4067 to digital 0 on the arduino (Serial RX pin) and the serial out of an RFID reader to one of the channels and be able to read from all 16 RFID readers;

- Open you data sheet and consider: 
- “DC Electrical Specifications” — minimum voltage that can be considered as a HIGH and the maximum for a 
LOW depending on your supply voltage;
- “ON” resistance — that is the resistance in Ohms (O) between one of the sixteen inputs/outputs and the common pin;

Consider the pinout diagram from the datasheet:

Pinout

How to Soldering

[TODO: VID SOLDERING GOES HERE!]

Fig 3. Lab video w/ HC4067

The Fritz

Fig 4. CD74HC4067 Analogue/Digital Module MUX-Breakout-16-Channel-DeMultiplexer

Demultiplexer is a combinational logic circuit designed to switch one common input line to one of several separate output line;

Multiplexer is a combinational logic circuit designed to switch one of several input lines to a single common output line;

The Code

The video

[TODO: VID 1 GOES HERE!]

Fig 5. Lab video w/ HC4067

Credits & References

bildr " Muxing Around With The CD74HC4067 + Arduino

Have you ever found yourself running out of pins to read an array of analog sensors? Don't worry, you're not alone, it…

bildr.org

Tutorial - 74HC4067 16-Channel Analog Multiplexer Demultiplexer

Now and again there's a need to expand the I/O capabilities of your chosen microcontroller, and instead of upgrading…

tronixstuff.com

Products

Edit description

mayhewlabs.com

SparkFun Analog/Digital MUX Breakout — CD74HC4067 by https://www.sparkfun.com

Datasheet High-Speed CMOS Logic 16-Channel Analog Multiplexer/Demultiplexer by Texas Instruments

The Multiplexer by https://www.electronics-tutorials.ws

The Demultiplexer by https://www.electronics-tutorials.ws