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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A real schematic rather than a photo of your breadboard might help you get an answer to your question.
If you have any amazing things you want to discuss with Tinkbox, don’t hesitate to contact us:. I’ve tried the same circuit with a couple of IC’s in case one was faulty, but the same behavior is exhibited.
Search vatasheet Search this site. Arduino Pro Mini Some functions may be missing or not functioning. Email Required, but never shown. 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. Therefore if you see a pin labelled “NC”, the least risky option is not to connect anything to it.
I wonder if you have misinterpreted whatever IC datasheet you have been looking at, if it contains that datashet pinout, with Gnd on pin 11?
Dual 4-Input NAND Gate
You can also call us at or send us a message through our Facebook page. I’ve tried to pair the inputs together as I want it to function as a dual input gate.
If you’re having trouble, please 774ls20 to Support or click on the Feedback button found at the bottom. Mega R3 Arduin Whereas in a “W” ceramic flat-pack 74ls2, the uses pin 11 as Gnd: I have this circuit: Sign up using Facebook.
74LS20 Datasheet PDF ( Pinout ) – Dual 4-input Positive NAND Gates
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 switching between looking at the datasheet, and looking at the breadboard, while wiring the breadboard?
There is no connection from IC pin 7 to Gnd 0V. Hopefully the OP can explain why they did this. The problem I see is not so much that pin 11 is connected to Gnd; but that pin 7 is not connected to Gnd. I’m using a quad input due to lack of components. Pin 11 is a no-connect on the normal DIP datashset, so grounding that pin has no effect. Peter – Absolutely agreed. Uno R3 Arduino Comp As already commented by John 74le20a real schematic datsheet definitely help readers.
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Powered by Rethink Tech Inc. PeterBennett – Yes, agreed. For all your product inquiries, send us a message on our Contact Page with the Product Inquiry subject. Home Questions Tags Users Unanswered.
74LS20 Datasheet – BooknStuff
Create new account Request new password. This won’t be doing the IC any good, although I hope that permanent damage won’t happen. You can place your order any day and time. The administrators are still migrating contents to our new home.