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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These sample schematics for devices unrelated to the class projects are similar to the types of schematics that should be produced for your project. Atmel Microcontrollers For information on the Freescale microcontrollers that were used in EE up until aboutand sample code for them, click here. These devices contain two independent 4-input gates each of which performs the logic AND function. This document discusses programming the ATmegaP but much of the information also applies to other ATmega or ATtiny microcontrollers used in the class.

Course topics EE Lx Lab Notes – A collection of topics related to constructing the class projects soldering, wire wrapping, debugging, etc.

Their prices on some stuff is very good, provided you can find what you need. They send out a printed catalog of over pages.


74LS21 | Inventoteca Soluciones Disruptivas

You can also call us at or send us a message through our Facebook page. Texas Instruments – TI has a large collection of datasheets online, both for current chips and for many obsolete ones. If they have something you need, you can probably get it at a good price, but it’s sometimes hard to find things.

These will be fixed someday, maybe. Tinkbox is currently in beta mode. Search form Search this site. They have a large inventory, the prices are reasonable, and we usually get the order pretty quickly.

Data Sheets at EE Stores

Other Services Custom Projects. Either way, they have a large collection of datasheets online and they are good quality. Jameco Electronics – We used to buy most of our stuff from Jameco before they “improved” their web site. You can also visit their store at Oxnard St.

Micro – They sell a wide variety of interesting stuff. Create new account Request new password. Uno R3 Arduino Comp Some functions may be missing or not functioning. Our office is open: Others were snagged from web sites wherever we could find them. None of these sites are particulary easy to use if you don’t know what part you are looking for.


If you can’t find a non-scanned copy somewhere else, get it from here. Popular Products Tinkduino Leo.

Datasheet «SN54/74LS21»

Using the serial communications interface on the ATmegaP and MCJL16 microcontrollers – An explanation of the serial port and and how to use it to exchange data with other devices, along with examples of sending and receiving data over the ATmegaP and MCJL16 serial ports.

However they do have a PDF of a pocket version of their logic data book. Digi-Key – This is our other primary supplier. Mega R3 Arduin Many of their files are scans of pages from their printed databooks and the images come out looking pretty bad. Other parts have have power and ground at non-standard positions or are listed as obsolete by the manufacturers and are no longer being produced.

Part 1 and Part 2. However they are datwsheet present in the our stock of parts so if you want to use them you can.