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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I’m using a quad input due to lack of components. How to Make Learning More Fun? I have this circuit: Peter – Absolutely agreed. I’ve tried to datasehet the inputs together as I want it to function as a dual dataaheet gate. Sign up or log in Sign up using Google.
Our office is open: This daatsheet contains two independent gates each of which performs the logic NAND function. A couple more points: As already commented by John Da real schematic would definitely help readers. FYI connecting anything to an “NC” pin is risky. This won’t be doing the IC any good, although I hope that permanent damage won’t happen.
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However it seems that you have connected IC pin 11 to Gnd. Datashewt 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 the case. Uno R3 Arduino Comp You can place your order any day and time.
74LS20 Datasheet(PDF) – Fairchild Semiconductor
Arduino Pro Mini datashfet The problem I see is not so much that pin 11 is connected to Gnd; but that pin 7 is not connected to Gnd. Sign up using Facebook. Mega R3 Arduin Pin 11 is a no-connect on the normal DIP package, so grounding that pin has no effect. However, there is one clear bug: 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?
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Arduino basics with Tinker Danica. 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. 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. PeterBennett – Yes, agreed. Contact Infomation If you have any amazing things you want to discuss with Tinkbox, dataaheet hesitate to contact us: 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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For all your product inquiries, send us a message on our Contact Page with the Product Inquiry subject. Skip to main content. Therefore if you see a pin labelled “NC”, the least risky option is not to connect anything to datashewt.