74LS20 DATASHEET PDF

Note The ”Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaran- teed The device should not be operated at. 74LS20 datasheet, 74LS20 pdf, 74LS20 data sheet, datasheet, data sheet, pdf, Fairchild Semiconductor, Dual 4-Input NAND Gate. 74LS Absolute Maximum Ratings(Note 1). Note 1: The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be.

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Datasheet in a “W” ceramic flat-pack package, the uses pin 11 as Gnd: Uno R3 Arduino Comp Create new account Request new password. You can also call us at or send us a message through our Facebook page. Sign up using Facebook. The fact that at least some datasheets like the TI one show both pinouts, could perhaps allow someone to look at the wrong pinout when datashset between looking at the datasheet, and looking at the breadboard, while wiring the breadboard?

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74LS20 Datasheet PDF – Motorola => Freescale

Powered by Rethink Tech Inc. By 74ks20 our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Your LED 7ls20 be drawing more than 0. A couple more points: However, there is one clear bug: There is no connection from IC pin 7 to Gnd 0V. I wonder if there is a rogue datasheet somewhere which has mixed that unusual “W” package pinout, with the “N” package pinout?

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This won’t be doing the IC any good, although I hope that permanent damage won’t happen.

IC Datasheet: 74LS20

Pin 11 is a no-connect on the normal DIP package, so grounding that pin has no effect. As already commented by John Da real schematic would definitely help readers. It’s been a very long time since I’ve messed around with this stuff so maybe I’ve forgotten something fundamentally intuitive about electronics, apologies if that is datahseet case.

I just couldn’t think of another reason why there is a Gnd connection on pin 11 – that was the only hypothesis I could think of. Engineered in the Philippines. This device contains two independent gates each of which performs the logic NAND function. Arduino basics with Tinker Danica.

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Post as a guest Name. However it seems that you have connected IC pin 11 to Gnd. Other Services Custom Projects. Sign up using Email and Password. Sign up or log in Sign up using Google. Contact Infomation If you have any amazing things you want to discuss with Tinkbox, don’t hesitate to contact us: By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

Have I wired this wrong?

A real schematic rather than a photo of your breadboard might help you get an answer to your question. Hopefully the OP can explain why they did this. It is interesting that pin 11 is connected datahseet Gnd on the OP’s breadboard, for the reason I explain in my answer.

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I’m using a quad input due to lack of components. Some functions may be missing or not functioning.

Please add that and re-test. Search form Search this site. Home Questions Tags Users Unanswered. I’ve tried the same circuit with a couple of IC’s in case one was faulty, but the same behavior is exhibited.

Tinkbox is currently in beta mode. FYI connecting anything to an “NC” pin is risky. If you’re having trouble, please go to Support or click on the Feedback button found at the bottom. Order Information Free shipping. I have this circuit: Product Group Product Description. Arduino Pro Mini I’ve tried to pair the inputs together as I want it to function as a dual input gate.

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