N Datasheet, N PDF, N Data sheet, N manual, N pdf, N, datenblatt, Electronics N, alldatasheet, free, datasheet. Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise . 3. Ordering information. 74HC; 74HCT 4-to line decoder/ demultiplexer. Rev. 7 — 29 February Product data sheet. Table 1. Ordering .

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If you wanted to generate a 1 of demultiplexer, you could use 16 s looking at the 4 least significant bits, while a single would look at the 4 most significant bits, with one ouput going to each of the other 16 s.

I am making a Jupiter II model, and want to build the fusion dagasheet for the bottom of it. No, that would not work.

Use 4 Arduino pins for 16 outputs! Serial to Parallel Demultiplexer – EEEnthusiast

This functionality is extremely simple to implement and can be a great alternative to shift registers discussed in one of my other tutorials. Sign up or log in Sign up using Google. Since the ouputs are active low, NAND gates do the job.

Diego July 26, at 5: If you are looking for a different way to drive your outputs, or want an easier solution to your output needs, this tutorial is definitely for you. If you want to know exactly what 741554n going on then draw out the truth table, but it is unlikely their function will make much sense to you.

4 to 16 decoder logic diagram – Electrical Engineering Stack Exchange

So is it possible that both enables are hooked to a 2-input OR gate; this is just making use of the extra pins to make 24? Sign up using Email and Password. June 14th, 0 Comments.


I will go through the code section by section. Its purpose is to take a Serial signal and convert it to a parallel one.

EEEnthusiast August 13, at 9: It will indicate which output you need to toggle on the Arduino in order to drive the appropriate output of the Demultiplexer. By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

First, the inversion of the outputs simply means that the output is active low. Serial to Parallel Demultiplexer. Paul Johnosn August 1, at 5: According to the internal logic diagram on the datasheet, the G inputs are connected to a two-input AND gate with inverting inputs, whose output feeds one input of all the NAND gates that produce the outputs.

There are probably two enable inputs because otherwise there would be two unused pins on the 24 pin package I don’t recall seeing 22 pin DIP packages. EEEnthusiast May 12, at 8: You can find me on my personal site or LinkedIn!

Home Questions Tags Users Unanswered. Use 4 Arduino pins for 16 outputs! By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. June 19th, 0 Comments. June 18th, 1 Comment.

Please consider upvoting those questions you found useful like this one by clicking the arrow pointing up near the answer vote count which is in turn above the checkbox you clicked to accept this question. My first question is more important Will someone please explain the purpose of inverting the outputs 0 through 15 as well as the use the NAND gates here?


The active-low enable inputs allow cascading of demultiplexers over many bits. I would like to appprentice even as you amend your website, how can i subscribe for a blog site? All the other ouputs stay high. Rather than providing only a single enable, both pins are used. If you have any questions about a specific segment, leave them in a comment below or on the forums. I was wondering if you can control multiple 74hc with the 74lsn.

Use 4 Arduino pins for 16 outputs! Serial to Parallel Demultiplexer

Leave A Comment Cancel reply Comment. This leads to possible outputs ranging from to on the datashee pins. Many TTL parts and older memory chips have active low enable inputs, so the active low outputs of this part can be connected directly to those inputs. Hi Sean, No, that would not work.

What you need to pay attention to as well is the truth table. Notify me of new posts by email. The account datasheft me a acceptable deal. Sorry, I just stuck with the defaults of that addon. Keep in mind that my video showcases the hardware implementation of the IC before jumping into the Arduino Serial to Parallel implementation.

You can upvote more than one answer. The person who took time to answer the question will appreciate that.