74LS21N from Texas Instruments High-Performance Analog. Find the PDF Datasheet, Specifications and Distributor Information. SN54/74LS DUAL 4-INPUT AND GATE. LOW POWER SCHOTTKY. J SUFFIX. CERAMIC. CASE N SUFFIX. PLASTIC. CASE 1. 1. 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 .

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Contact Infomation If you have any amazing things you want to discuss with Tinkbox, don’t hesitate to contact us: How to Make Learning More Fun?

It’s usually easier to find parts dayasheet that catalog than online. Output can be confirmed with an oscilloscope. These were originally written for the ATmegaA and should run unchanged on that processor.

Questions, corrections and comments about the content of this page should be sent to Allan Weber. Course topics EE Lx 74ls12n Notes – A collection of topics related to constructing the class projects soldering, wire wrapping, debugging, etc. Their prices on some stuff is very 47ls21n, provided you can find what you need. This document discusses programming the Datasehet but much of the information also applies to other ATmega or ATtiny microcontrollers used in the class.

These parts are not normally used in current EELx projects. Many of their files are scans of pages from their printed databooks and the images come out looking pretty bad.


Jameco Electronics – We used to buy most of our stuff from Jameco before they “improved” their web site. Their inventory changes a lot so you might not be able to buy the same things six months from now.

Popular Electronics. 74LS 14P Dual 4 input AND Gate

Either way, they have a large collection of datasheets online and they are good quality. Fairchild Semiconductor – They used to have a good collection of very presentable datasheets but it looks like most of the 74LS ones have been removed. Many figures didn’t survive the translation too well or are missing datashfet.

Arduino basics with Tinker Danica. These devices contain two independent 4-input gates each of which performs the logic AND function.

Here’s some of the stuff we use and recommend. Datasheets for the newer parts were mostly obtained from the manufacturers or from Jameco and Digi-Key where we order most of our parts. These will be fixed someday, maybe. It will also get you on their mailing list for future catalogs. Some functions may be missing or not functioning.

Datasheet – 74LS21 – And 4 Entradas

Newark and Mouser Electronics – These two are major suppliers to the electronics industry with very large inventories. Most are designed to test PALs on a demo board in the lab. Product Group Product Description. Some of the following documents are in PDF format. This is collection of documents from a variety of sources for use by the students in EE Lx. Part 1 and Part 2. Satasheet Microcontrollers For information on the Freescale microcontrollers that were used in EE up until datazheetand sample code for them, click here.


Uno R3 Arduino Comp If you are interested in purchasing electronic components for building projects, here are some links to places we buy parts from.

Implements a modulo 5 up-down counter with binary outputs and decoded 1-of-5 outputs.

74LS21 | Inventoteca Soluciones Disruptivas

Search form Search this site. Texas Instruments – TI has a large collection of datasheets online, both for current datashet and for many obsolete ones. Micro – They sell a wide variety of interesting stuff. However the size of the catalog sometimes make it hard to find things. They send out a printed catalog of over pages.

Modern Device – They seem to have a interesting variety of components including many sensors and related components. All Electronics – This is basically a surplus store with both new and used components.

You can also visit their store at Oxnard St.