CMOS workshop part 1 - basics
A single CMOS input/output is called a Logic Gate. Sometimes each gate has several inputs. A chip usually consists of several identical gates that can be used independently. In the datasheets we will find something called a Truth Table. It tells us how the logic gates operates. Lets take a look at a few different chips and their operations.
Now the logic gets alittle trickier...
NAND and NOR gate are sometimes called the universal gates, since they both can be used to form all the other basic logic gates.
Is it starting to make sense? Let have a look at a couple of more...
Those are a few basic CMOS chips. We'll use them later to breadboard stuff or analyze a few of my designs.
I mentioned before that not all CMOS chips follows this logic. We have many exceptions, switches, linear amplifiers, MOSFET cmos chips ect. I will cover a few of those later.
Lets stop there for a while. This post turned out alot bigger than I imagined and it can be a bit overwhelming! I had a hard time wrapping my head around this when I started out. If you are confused by the logic inputs and outputs, don't worry. In the next part we'll actually make something useful, a simple squarewave fuzz. The breadboard is a great learning platform, and by making a few small circuits I hope you will begin to understand these logic alittle better.
Please let me know what you think of this post and if you find anything that is incorrect.
Next part: CMOS workshop part 2
8/23/2015 05:31:52 pm
This is awesome! I've been curious about how these cmos circuits works. Thanks!
8/23/2015 11:58:27 pm
Happy to hear that it's appreciated. Part 3 added today. :)
2/24/2019 03:30:05 pm
Incredible series. As a seasoned musician and (almost) beginner in electronics, these articles are at perfect pace for me. Thanks a lot for taking the time to share your knowledge. Regards from Brazil.
3/12/2019 03:16:30 am
I'm glad you like the CMOS series. :) Cheers
3/13/2021 10:42:59 pm
Thank yyou for sharing
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