4001 Quad 2 input NOR Gate
From DT Online
This chip contains four (QUAD) NOR gates, each with 2 inputs, which can operate individually or in combination.
Features and Applications
NOR logic gate. Found on electronic resource boards - Short Time Delay 1, Flip Flop 1, Set Reset Flip Flop, Motor Speed Control
In normal use:
Pin 14 (+3 to 15v) is connected to the positive (+ve) supply. Pin 7 is connected to the negative (-ve) supply. All unused inputs should be connected to the positive supply.
Note: The output signal is low powered and normally needs amplification to drive output devices.
Each logic gate works as shown in the truth table.
|Input 1 (eg pin 1)||Input 2 (eg pin 2)||Output (eg pin 3)|
|Transistor selection NPN and PNP||BC108 Transistor||BC547B Transistor||BFY51 Transistor||Darlington Transistors||555 IC Timer||741 Operational Amplifier||Quad 2-input NOR Gate 14 Pin Logic IC||Quad 2-input NAND Gate 14-DIP Logic IC|