Quad NOT (2 input) 7404

The Quad NOT (2 input) 7404 listing is the 7404 hex inverter, a 74-series logic IC with six independent NOT gates in one 14-pin package. Despite the listing name, the 7404 has six inverters and each gate has a single input: the output is always the opposite of the input. It is a basic chip for digital logic courses, signal inversion and simple clock experiments.

Quad NOT (2 input) 7404 Specifications

• Function: 6 × NOT gates (hex inverter)
• Logic: Y = NOT A
• Truth table: 0 → 1, 1 → 0
• Supply voltage: 5 V
• Pins: 14 (VCC on pin 14, GND on pin 7)
• Gate pins: inputs 1, 3, 5, 9, 11, 13; outputs 2, 4, 6, 8, 10, 12

Quad NOT (2 input) 7404 Applications

• Inverting logic and control signals
• Making NAND and NOR functions together with the 7408 AND and 7432 OR
• Ring oscillators and clock experiments
• Buffering digital signals between circuit stages
• Digital logic labs and university electronics courses

What's in the Box

• 1 × 7404 hex inverter IC

Tip: Connect pin 14 to +5 V and pin 7 to GND, and place a 100 nF capacitor between them close to the chip. Do not leave unused inputs floating: tie them to GND or VCC.

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