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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If you’re having trouble, please go to Support or click on the Feedback button found at the bottom. Some functions may be missing or not functioning.

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.

Datasheets for the newer parts were mostly obtained from the manufacturers or from Jameco and Digi-Key where we order most of our parts. None of these sites are particulary easy to use if you don’t know what part you are looking for. However they are still present in the our stock of parts so if you want to use them you can. Contact Infomation If you have any amazing things you want to discuss with Tinkbox, don’t hesitate to contact us: Some of the documents may not be relevant to the current semester’s project but are left here for reference purposes.

On Semiconductor – I think they are mainly a distributer of ICs, not a manufacturer.

Datasheet «SN54/74LS21»

Output can be confirmed with an oscilloscope. You can also visit their store at Oxnard St. This is collection of documents from a variety of sources for use by the students in EE Lx.


Skip to main content. Not sure if they have minimum order amounts that may make it hard for the hobbyist but they are worth a look. Jameco Electronics – We used to buy most of our stuff from Jameco before they “improved” their web site.

If you have any datashest things you want to discuss with Tinkbox, don’t hesitate to contact us:. Powered by Rethink Tech Inc.

SN54/74LS21 Motorola DUAL 4-INPUT and GATE ChipFind Datasheet Archive |

Engineered in the Philippines. 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. Uno R3 Arduino Comp Many of their files are scans of datssheet from their printed databooks and the images come out looking pretty bad.

Most are designed to test PALs on a demo board in the lab. They may have absorbed Motorola’s Datashset product line, or at least their tech library.

It’s usually easier to find datashwet in that catalog than online. The notes below mostly apply to both microcontrollers even if the description of the document only mentions one of them. Search form Search this site.

All Electronics – This is basically a surplus store with both new and used components. The datasheets listed below have been obtained from various places on the Internet.

Datasheet – 74LS21 – And 4 Entradas

Tinkbox is currently in beta mode. The “74LS” will find it in one of the more common logic family, and the “N” says to find a standard plastic package.

These were originally written for the ATmegaA and should run unchanged on that processor. Our office is open: Mega R3 Arduin Texas Instruments – TI has a large collection of datasheets online, both for current chips and for many obsolete ones.


Create new account Request new password. Their inventory changes a lot so you might not be able to buy the same things six months from now. Arduino Pro Mini Popular Products Tinkduino Leo.

If you are interested in purchasing electronic components for building projects, here are some links to places we buy parts from. This document 74ls211n programming the ATmegaP but much of the information also applies to other ATmega or ATtiny microcontrollers used in the class. Their prices on some stuff is very good, provided you can find what you need. It’s now more difficult to find stuff on the web site so you may be better off requesting a printed catalog or looking through the PDF version of the printed 74ls12n.

Either way, they have a large collection of datasheets online and they are good quality. For all your product inquiries, send us a message on our Contact Page with the Product Inquiry subject. Newark and Mouser Electronics – These two are major suppliers to the electronics industry with very large inventories. Parts in stock – This is a list of 74ls21j of the parts that the EE class has in stock for project construction.

Questions, corrections and comments about the content of this page should be sent to Allan Weber.

You can place your order any day and time. Others were snagged from web sites wherever we could find them.

It will also get you on their mailing list for future catalogs. Arduino basics with Tinker Danica. Order Information Free shipping.