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 . 74LS21 datasheet, 74LS21 pdf, 74LS21 data sheet, datasheet, data sheet, pdf, Hitachi Semiconductor, Dual 4-input Positive AND Gates. SN54/74LS DUAL 4-INPUT AND GATE. LOW POWER SCHOTTKY. J SUFFIX. CERAMIC. CASE N SUFFIX. PLASTIC. CASE 1. 1.

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Some are nonLS parts that are logically compatible with 74LSxx parts, but may have problems electrically due to different fan-in and fan-out.

Datasheet – 74LS21 – And 4 Entradas

Some of the following documents are in PDF format. Part 1 and Part 2. Mega R3 Arduin However they are still present in the our stock of parts so if you want to use them you can. Output can datassheet confirmed with an oscilloscope.

SN54/74LS21 datasheet & applicatoin notes – Datasheet Archive

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. All Electronics – This is basically a surplus store with both new and used components. These will be fixed someday, maybe. Cdbe datasheet pdf – datasheet pdf Cdbe datasheet pdf Many figures didn’t survive the translation too well or are missing entirely. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part.


Texas Instruments – TI has a large collection of datasheets online, both for current chips and for many obsolete ones. Ql5 datasheet pdf QL5 datasheet, Tinkbox is currently in beta mode.

It will also get you on their mailing list for future catalogs. If you can’t find a non-scanned copy somewhere else, get it from here. Other Services Custom Projects.

74LS21: 14P Dual 4 input AND Gate

All operating parameters, including Typicals must be validated for each customer application by customers technical experts. Arduino basics with Tinker Danica.

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. Implements a 3-bit up-down Gray code counter with binary outputs and the seven-segment display outputs the message “EE L”. Popular Products Tinkduino Leo. Not more than one output should be shorted at a time, nor for more than 1 second.

Download their PDF catalog. Create new account Request new password. Motorola and are registered trademarks of Motorola, Inc.

Calam̩o РDatasheet Р74LS21 РAnd 4 Entradas

Their prices on some stuff is very good, provided you can find what fatasheet need. You can also call us at or send us a 74lss21 through our Facebook page. Questions, corrections and comments about the content of this page should be sent to Allan Weber. Contact Infomation If you have any amazing things you want to discuss with Tinkbox, don’t hesitate to contact us: Motorola Literature Distribution; P.

Here’s some of the stuff we use and recommend.

  BS EN ISO 13918 PDF

On Semiconductor – I think they are mainly a distributer of ICs, not a manufacturer. Others were snagged from web sites wherever we could find them.

Course topics EE Lx Lab Notes – A collection of topics related to constructing the class projects soldering, wire wrapping, debugging, etc. Implements a 3-bit up-down binary counter with binary outputs and seven-segment display outputs.

This document discusses programming the ATmegaP but much of the information also applies to other ATmega or ATtiny microcontrollers used in the class. Their inventory changes a lot so you might not be able to buy the same things six months from now.

The notes below mostly apply to both microcontrollers even if the description of the document only mentions one of them. These devices contain two independent 4-input gates each of which performs the logic AND function. Many of their files are scans of pages from their printed databooks and the images come out looking pretty bad. S – Controls an LED with a switch. All students should read this before starting construction of your project in the lab.

For all your product inquiries, send us a message on our Contact Page with the Product Inquiry subject.

They may have absorbed Motorola’s TTL product line, or at least their tech library. It’s usually easier to find parts in that catalog than online. Typical parameters can and do vary in different applications. Motorola does not convey any license under its patent rights nor the rights of others.

S – Displays a sequence of hexadecimal numbers on a seven-segment display using an internal timer and interrupts for delays.