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 couple more points: Sign up using Email and Password. This device contains two independent gates each of which performs the logic NAND function.
74LS20 – Dual 4 Input NAND Gate
How to Make Learning More Fun? Therefore if you see a pin labelled “NC”, the least risky option is not to connect anything to it. It’s been a very long time since I’ve messed around with this datasyeet so maybe I’ve forgotten something fundamentally intuitive about electronics, apologies if that is the case.
However it seems that you have connected IC pin 11 to Gnd. I’ve tried to pair the inputs together as I want it to function as a dual datasueet gate.
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There is no connection from IC pin 7 to Gnd 0V. This won’t be doing the IC any good, although I hope that permanent damage won’t happen. Hopefully the OP can explain why they did this. I wonder if you have misinterpreted whatever IC datasheet you have been looking at, if it contains that unusual 74ks20, with Gnd on pin daasheet 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.
74LS20 – Digiware Store
Peter – Absolutely agreed. Popular Products Tinkduino Leo. Your LED will be drawing more than 0. You can place your order any day and time. I wonder if there is a rogue datasheet somewhere which has mixed that unusual “W” package pinout, with the “N” package pinout?
Fairchild Semiconductor 74LS20 Series Datasheets. DM74LS20, 74LS20 Datasheet.
Sign up or datxsheet in Sign up using Google. 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. You can also call us at or send us a message through our Facebook page. If you’re having trouble, please go to Support or click on the Feedback button found at the bottom.
Engineered in the Philippines. Uno R3 Arduino Comp Post as a guest Name. Search form Search this site. 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?