SN74HC21DRG4

Product Overview

• Category: Integrated Circuit
• Use: Logic Gate
• Characteristics: Dual 4-input AND Gate
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: High-Speed CMOS Logic
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 9 ns (typical)
• Maximum Quiescent Current: 1 µA
• Maximum Operating Frequency: 50 MHz

Detailed Pin Configuration

The SN74HC21DRG4 has a total of 14 pins. The pin configuration is as follows:

1. A1 (Input A1)
2. B1 (Input B1)
3. Y1 (Output Y1)
4. A2 (Input A2)
5. B2 (Input B2)
6. Y2 (Output Y2)
7. GND (Ground)
8. Y3 (Output Y3)
9. B3 (Input B3)
10. A3 (Input A3)
11. Y4 (Output Y4)
12. B4 (Input B4)
13. A4 (Input A4)
14. VCC (Supply Voltage)

Functional Features

• Dual 4-input AND gate with independent inputs
• High-speed operation suitable for various applications
• Compatible with TTL (Transistor-Transistor Logic) input levels
• Low power consumption
• Schmitt-trigger action on all inputs ensures noise immunity
• Balanced propagation delays minimize output skew

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient processing - Low power consumption reduces energy usage - Noise immunity provided by Schmitt-trigger action ensures reliable performance - Compatibility with TTL input levels enables easy integration into existing systems

Disadvantages: - Limited to 4-input AND gate functionality, may not be suitable for all logic operations - Operating temperature range may restrict usage in extreme environments

Working Principles

The SN74HC21DRG4 is a dual 4-input AND gate that performs logical AND operations on its inputs. It utilizes high-speed CMOS technology, allowing for fast and efficient processing of digital signals. The Schmitt-trigger action on all inputs provides noise immunity, ensuring reliable operation even in the presence of electrical noise.

Detailed Application Field Plans

The SN74HC21DRG4 can be used in various applications that require logical AND operations. Some potential application fields include:

1. Digital signal processing
2. Data communication systems
3. Microcontroller-based systems
4. Industrial automation
5. Automotive electronics

Detailed and Complete Alternative Models

1. SN74HC08DRG4: Quad 2-input AND Gate
2. SN74HC32DRG4: Quad 2-input OR Gate
3. SN74HC86DRG4: Quad 2-input XOR Gate
4. SN74HC00DRG4: Quad 2-input NAND Gate
5. SN74HC02DRG4: Quad 2-input NOR Gate

These alternative models offer similar functionality to the SN74HC21DRG4 but with different input configurations or additional features.

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