# Complex Logic ICs

### IC Functions, Pin Configurations, and Truth Tables

#### IC 7400: Quad 2-Input NAND Gate
**Function:** The IC 7400 contains four independent 2-input NAND gates in a single package. You can use any of these four gates separately.\
**Boolean Expression:** The logical function of a NAND gate is represented as `F = (AB)'`
 
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  <img src="https://learn.digilabdte.com/uploads/images/gallery/2025-09/image-1758898955262.png" alt="Contoh Gambar" width="400">
</p>

**Pin Configuration:** This IC has 14 pins.\
Pin 7: Ground connection (GND).\
Pin 14: Positive power supply (+5V, VCC).\
Gate 1: Pins 1 & 2 are inputs, Pin 3 is the output.\
Gate 2: Pins 4 & 5 are inputs, Pin 6 is the output.\
Gate 3: Pins 9 & 10 are inputs, Pin 8 is the output.\
Gate 4: Pins 12 & 13 are inputs, Pin 11 is the output.

**Truth Table:** The output is 0 only when both inputs are 1.
| Input A | Input B | Output Y |
|---------|---------|----------|
|    0    |    0    |    1     |
|    0    |    1    |    1     |
|    1    |    0    |    1     |
|    1    |    1    |    0     |


#### IC 7402: Quad 2-Input NOR Gate
**Function:** The IC 7402 contains four independent 2-input NOR gates.\
**Boolean Expression:** The logical function of a NOR gate is represented as `F = (A + B)'`

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  <img src="https://avelectronics.cc/wp-content/uploads/2018/09/7402_Quad_2-input_NOR_Gates.png" alt="Contoh Gambar" width="400">
</p>

**Pin Configuration:** This 14-pin IC has a slightly **`different pinout`**.\
Pin 7: Ground connection (GND).\
Pin 14: Positive power supply (+5V, VCC).\
Gate 1: Pins 2 & 3 are inputs, Pin 1 is the output.\
Gate 2: Pins 5 & 6 are inputs, Pin 4 is the output.\
Gate 3: Pins 8 & 9 are inputs, Pin 10 is the output.\
Gate 4: Pins 11 & 12 are inputs, Pin 13 is the output.

**Truth Table:** The output is 1 only when both inputs are 0.
| Input A | Input B | Output Y |
|---------|---------|----------|
|    0    |    0    |    1     |
|    0    |    1    |    0     |
|    1    |    0    |    0     |
|    1    |    1    |    0     |

#### IC 7486: Quad 2-Input XOR Gate
**Function:** The IC 7486 contains four independent 2-input XOR (Exclusive-OR) gates.\
**Boolean Expression:** The logical function of a NAND gate is represented as `F = A'B + AB'`

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  <img src="https://upload.wikimedia.org/wikipedia/commons/f/f7/7486_Quad_2-input_ExOR_Gates.PNG" alt="Contoh Gambar" width="400">
</p>

**Pin Configuration:** The pinout for the 7486 is identical to the 7400.\
Pin 7: Ground connection (GND).\
Pin 14: Positive power supply (+5V, VCC).\
Gate 1: Pins 1 & 2 are inputs, Pin 3 is the output.\
Gate 2: Pins 4 & 5 are inputs, Pin 6 is the output.\
Gate 3: Pins 9 & 10 are inputs, Pin 8 is the output.\
Gate 4: Pins 12 & 13 are inputs, Pin 11 is the output.

**Truth Table:** The output is 1 only when the inputs are different.
| Input A | Input B | Output Y |
|---------|---------|----------|
|    0    |    0    |    0     |
|    0    |    1    |    1     |
|    1    |    0    |    1     |
|    1    |    1    |    0     |

#### IC 74266: Quad 2-Input XNOR Gate
**Function:** The IC 74266 contains four independent 2-input XNOR gates.\
**Boolean Expression:** The logical function of a NAND gate is represented as `F = AB + A'B'`

<p align="center">
  <img src="https://circuitspedia.com/wp-content/uploads/2021/05/74266-IC-PIN-DIAGRAM.jpg" alt="Contoh Gambar" width="400">
</p>

**Pin Configuration:** This 14-pin IC has a slightly **`different pinout`**.\
Pin 7: Ground connection (GND).\
Pin 14: Positive power supply (+5V, VCC).\
Gate 1: Pins 1 & 2 are inputs, Pin 3 is the output.\
Gate 2: Pins 5 & 6 are inputs, Pin 4 is the output.\
Gate 3: Pins 8 & 9 are inputs, Pin 10 is the output.\
Gate 4: Pins 12 & 13 are inputs, Pin 11 is the output.

**Truth Table:** The output is 1 only when the inputs are same.
| Input A | Input B | Output Y |
|---------|---------|----------|
|    0    |    0    |    1     |
|    0    |    1    |    0     |
|    1    |    0    |    0     |
|    1    |    1    |    1     |