Brief AND Gate Made From 7400 74HC00 NAND Universal Logic

One NAND gate needs to be made into a NOT gate.

Simple NAND logic gate with inputs tied together makes a NOT gate schematic diagram by electronzap electronzapdotcom
Simple NAND logic gate with inputs tied together makes a NOT gate schematic diagram by electronzap electronzapdotcom

Connecting all NAND gate inputs together effectively makes them one input. There now becomes only 2 possible combinations where they are either all high (at close to 5V), or they are all low (close to 0V).

Most NAND gates ICs have 2 inputs, but you can find ICs with more inputs per NAND gate.



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Combining NAND and NOT gate.

Simple NAND plus NOT makes an AND logic gate schematic diagram by electronzap electronzapdotcom
Simple NAND plus NOT makes an AND logic gate schematic diagram by electronzap electronzapdotcom

The NAND gate is an inverted AND gate. So, if you have a NAND gate, and a digital inverter/NOT gate, then you can connect the NAND gate in series with the NOT gate and they will behave like an AND gate.

 

 

AND gate review:

74HC00 7400 Quad NAND 2 input logic gate integrated circuit demo learning electronics lesson 0049
74HC00 7400 Quad NAND 2 input logic gate integrated circuit demo learning electronics lesson 0049

NAND gate review:

7400 74HC00 quad 2 input NAND gate IC demonstration circuit schematic and pin layout diagram by electronzap
7400 74HC00 quad 2 input NAND gate IC demonstration circuit schematic and pin layout diagram by electronzap

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