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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4 to 16 decoder logic diagram – Electrical Engineering Stack Exchange

WhatRoughBeast 49k 2 28 Home Questions Tags Users Unanswered. June 30th, 0 Comments. Notify me of new posts by email. This means that you may not need the four push buttons if you only want to work with the Arduino.

National Semiconductor

If you have any questions about the implementation, feel free to post them below or on the forums. What you need to pay attention to as well is the truth table. According to the internal logic diagram on the datasheet, the G inputs are connected to a two-input AND gate with inverting inputs, whose datashheet feeds one input of all the NAND gates that produce the outputs. All the other ouputs stay high. Rather than providing datashdet a single enable, both pins are used. 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.

Will someone please explain the purpose of inverting the outputs 0 through 15 as well as the use the NAND gates here? Keep in mind datadheet my video showcases the hardware implementation of the IC before jumping into the Arduino Serial to Parallel implementation.


The person who took time to answer the question will appreciate that. June 18th, 1 Comment. I am making a Jupiter II model, and want to build the fusion core for the bottom of it.

This leads to possible outputs ranging from to on the 4 pins. Notify me of follow-up comments by email. 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? Use 4 Arduino pins for 16 outputs! June 23rd, 0 Comments. I am a new user so I didn’t know I had that power. Sign up or log in Sign up using Google. I will go through the code section by section.

Post as a guest Name. The account aided me a acceptable deal. This section will describe each pin you will need to use. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie darasheetand that your continued use of the website is subject to these policies.

Learn how your comment data is processed. I had been a little bit familiar of this your broadcast offered bright clear idea Diego recently posted… Diego. If you have any questions about a specific segment, leave them in a comment below or on the forums. That is, if the outputs were active high, OR gates would perform the synthesis desired. adtasheet

The active-low enable inputs datashret cascading of demultiplexers over many bits. I graduated in and have tried my best to share my electrical knowledge and experience with viewers and readers from all over the world. June 14th, 0 Comments.

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. Since the ouputs are active low, NAND gates do the job.


I was wondering if you can control multiple 74hc with the 74lsn.

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

Make sure to fully understand what goes where and how everything is tied together internally. Leave A Comment Cancel reply Comment.

I would like to appprentice even as you amend your website, how can i subscribe for a blog site? Sean Lovelady May 12, at 1: This allows more flexibility in the logic functions available. This functionality is extremely simple to implement and can be a great alternative to shift vatasheet discussed in one of my other tutorials.

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. You can find me on my personal site or LinkedIn! As for the NAND gates, there is a function being implemented in which the gates are there to realize it. It will indicate datasheeet output you need to dataaheet on the Arduino in order to drive the appropriate output of the Demultiplexer.

EEEnthusiast August 13, at 9: And why are there 2 of them, you ask? If you go through the datasheet of the IC, you will datasheeet a pinout section. Here is the truth table from the datasheet: First, the inversion of the outputs simply means that the output is active low.

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