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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Peter – Absolutely agreed.
74LS20 Datasheet PDF – Hitachi Semiconductor
Some functions may be missing or not functioning. A real schematic rather than a photo of your breadboard might help you get an answer to your question.
74LS20 Dual 4-input NAND Gate
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? Mega R3 Arduin Arduino Pro Mini I wonder if there is a rogue datasheet somewhere which has mixed that unusual “W” package pinout, with the “N” package pinout?
Whereas in a “W” ceramic flat-pack package, the uses pin 11 as Gnd: Therefore if you see a pin labelled “NC”, the least risky option is not to connect anything to it. The problem I see is not so much that pin 11 is connected to Gnd; but that pin 7 is not connected to Gnd. Email Required, but never shown. Arduino basics with Tinker Danica. This won’t be doing the IC any good, although I hope that permanent damage won’t happen.
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Datashert can place your order any day and time. PeterBennett – Yes, agreed. Tinkbox is currently in beta mode. A couple more points: That would be correct for an unusual package military temperature version of in a ceramic flat-pack but is not correct for a standard 74LS20 in “N” package plastic DIP like yours. Powered by Rethink Tech Inc. There is no connection from IC pin 7 to Gnd 0V.
74LS20 Dual 4-input NAND Gate IC | Jaycar Electronics
The administrators are still migrating contents to our new home. Contact Infomation If you have any amazing things you want to discuss with Tinkbox, don’t hesitate to contact us: I’m using a quad input due to lack of components.
Pin 11 is a no-connect fatasheet the normal DIP package, so grounding that pin has no effect.
Home Questions Tags Users Unanswered. 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?
For all your product inquiries, send us a message on our Contact Page with the Product Inquiry subject. However it seems that you have connected IC pin 11 to Gnd. Have I wired this wrong?
74LS20 Datasheet(PDF) – Hitachi Semiconductor
As already commented by John Da real schematic would definitely help readers. I’ve tried 74la20 same circuit with a couple of IC’s in case one was faulty, but the same behavior is exhibited.
Hopefully the OP can explain why they did this.