7402 2-Input NOR Gate

IC 7402 2-Input NOR Gate

Specifications:

• Number of Gates:The 7402 IC contains four NOR gates. This means you have four independent logic gates in a single package.

• Pin Configuration:The pinout of a typical 7402 IC is as follows:

  • Pins 1 and 2: Inputs (A and B) for the first NOR gate.
  • Pins 3: Output (Y) for the first NOR gate.
  • Pins 4 and 5: Inputs (A and B) for the second NOR gate.
  • Pins 6: Output (Y) for the second NOR gate.
  • Pins 7 and 8: Inputs (A and B) for the third NOR gate.
  • Pins 9: Output (Y) for the third NOR gate.
  • Pins 10 and 11: Inputs (A and B) for the fourth NOR gate.
  • Pins 12: Output (Y) for the fourth NOR gate.
  • Pins 13: Supply voltage (VCC).
  • Pins 14: Ground (GND).

• Truth Table:The truth table for a 2-input NOR gate is as follows:

  Input A	Input B	Output (Y)
  0	0	1
  0	1	0
  1	0	0
  1	1	0

  In this truth table, “0” represents a logic low or “false,” while “1” represents a logic high or “true.”

• Operation:The NOR gate performs a logical OR operation on its inputs and then negates the result. The output is “1” (logic high) only when both inputs are “0” (logic low). In all other cases, the output is “0” (logic low).

• Note:You can use the 7402 IC to implement various logic functions and construct digital circuits. It’s a fundamental building block in digital electronics and is commonly used for tasks such as signal inversion and logic level conversion.