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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Post Your Answer Discard 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. A couple more points: Please add that and datashret. FYI connecting anything to an “NC” pin is risky. This device contains two independent gates each of which performs the logic NAND function.

I wonder if you have misinterpreted whatever IC datasheet you have been looking at, if it contains that unusual pinout, with Gnd on pin 11? 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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Order Information Free shipping. The problem I see is not so much that pin 11 is connected to Gnd; but that pin 7 is not connected to Gnd.

74LS20 Dual 4-input NAND Gate

PeterBennett – Yes, agreed. Engineered in the Philippines. Popular Products Tinkduino Leo.

Have I wired this wrong? I’m using a quad input due to lack of components. Skip to main content. There is no connection from IC pin 7 to Gnd 0V. When I throw the switches to the up position, as pictured, the circuit is shorted to ground, which should pull the input pins low, meaning the output pin is high and the LED lights.

For all your product inquiries, send us a message on our Datzsheet Page with the Product Inquiry subject. Our office is open: Post as a guest Name. Whereas in a “W” ceramic flat-pack package, the uses pin 11 as Gnd: Powered by Rethink Tech Inc.

It’s been a very long time since I’ve datashest around with this stuff so maybe I’ve forgotten something fundamentally intuitive datashewt electronics, apologies darasheet that is the case.

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. Sign up using Email and Password. By using our vatasheet, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Your LED will be drawing more than 0. Some functions may be missing or not functioning.

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I’ve tried the same circuit with a couple of IC’s in case one was faulty, but the same behavior is exhibited.

Contact Infomation If you have any amazing things you want to discuss with Tinkbox, don’t hesitate to contact us: The fact that at least some datasheets like the TI one show both pinouts, could perhaps allow someone to look 74l20 the wrong pinout when switching between looking at the datasheet, and looking at the breadboard, while wiring the breadboard?

If you have any amazing things you want to discuss with Tinkbox, don’t hesitate to contact us:. Hopefully the OP can explain why they did this.

74LS20 datasheet, Pinout ,application circuits Dual 4-Input NAND Gate

Peter – Absolutely agreed. How to Make Learning More Dtaasheet The administrators are still migrating contents to our new home. Pin 11 is a no-connect on the normal DIP package, so grounding that pin has no effect. 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.