7421 Dual 4-input AND Gate
- Contains two independent 4-input AND gates
- Operates at standard 5V TTL logic levels
- Performs logical AND on four inputs per gate
- Low propagation delay for fast switching
- Available in 14-pin DIP or SMD packages
25,00 EGP
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Description
7421 Dual 4-Input AND Gate – Product Overview
The 7421 IC contains two independent 4-input AND gates. Each gate outputs a HIGH signal only when all four inputs are HIGH, performing the logical AND function. It’s commonly used in digital logic circuits requiring multi-input AND operations.
⚙️ Key Features
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Contains 2 independent 4-input AND gates
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TTL logic compatible
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Standard 14-pin DIP package
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Typical propagation delay ~10 ns
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Low power consumption
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Operates at 5V supply voltage
📋 Specifications
| Parameter | Description |
|---|---|
| IC Number | 7421 |
| Number of Gates | 2 |
| Inputs per Gate | 4 |
| Output Type | Standard TTL |
| Operating Voltage | 4.75V to 5.25V (Typical 5V) |
| Propagation Delay | Approx. 10 ns |
| Package Type | DIP-14 |
🔌 Pin Configuration (14-pin DIP)
| Pin | Name | Function |
|---|---|---|
| 1 | 1A | Input 1 Gate 1 |
| 2 | 1B | Input 2 Gate 1 |
| 3 | 1C | Input 3 Gate 1 |
| 4 | 1D | Input 4 Gate 1 |
| 5 | 1Y | Output Gate 1 |
| 6 | NC | Not Connected |
| 7 | GND | Ground |
| 8 | 2Y | Output Gate 2 |
| 9 | 2A | Input 1 Gate 2 |
| 10 | 2B | Input 2 Gate 2 |
| 11 | 2C | Input 3 Gate 2 |
| 12 | 2D | Input 4 Gate 2 |
| 13 | NC | Not Connected |
| 14 | VCC | Power Supply (+5V) |
Truth Table (Each Gate)
| Input A | Input B | Input C | Input D | Output Y |
|---|---|---|---|---|
| 0 | X | X | X | 0 |
| X | 0 | X | X | 0 |
| X | X | 0 | X | 0 |
| X | X | X | 0 | 0 |
| 1 | 1 | 1 | 1 | 1 |
(X = Don’t care)
Applications
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Digital logic circuit design requiring multi-input AND
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Control and timing circuits
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Data processing and decision making circuits
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Signal gating and enabling
Package Includes
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1 × 7421 Dual 4-Input AND Gate IC (DIP-14)
Specification
General
| Weight Weight | 0,0000 g |
|---|
