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SN74F21D
Product Overview
- Category: Integrated Circuit (IC)
- Use: Logic Gates
- Characteristics: Dual 4-input Positive-AND Gate
- Package: SOIC-14
- Essence: High-speed CMOS technology
- Packaging/Quantity: Tape and Reel, 2500 pieces per reel
Specifications
- Logic Family: F
- Number of Inputs: 4
- Number of Gates: 2
- Supply Voltage: 2V to 6V
- Propagation Delay: 7.5 ns (typical)
- Operating Temperature Range: -40°C to 85°C
Detailed Pin Configuration
The SN74F21D has a total of 14 pins arranged as follows:
- Input A1
- Input B1
- Output Y1
- Ground (GND)
- Input D1
- Input C1
- Output Y2
- VCC (Positive Power Supply)
- Input A2
- Input B2
- Output Y3
- Ground (GND)
- Input D2
- Input C2
Functional Features
- Dual 4-input positive-AND gate with independent inputs and outputs.
- High-speed operation due to the use of advanced CMOS technology.
- Wide supply voltage range allows for versatile applications.
- Low power consumption.
- Schmitt-trigger input allows for noise immunity.
Advantages and Disadvantages
Advantages
- High-speed operation enables efficient signal processing.
- Versatile supply voltage range accommodates various system requirements.
- Low power consumption contributes to energy efficiency.
- Noise immunity provided by the Schmitt-trigger input ensures reliable operation.
Disadvantages
- Limited number of gates per package.
- Not suitable for applications requiring a large number of inputs.
Working Principles
The SN74F21D is based on high-speed CMOS technology. It consists of two independent 4-input positive-AND gates. Each gate performs the logical AND operation on its four input signals and provides the corresponding output. The Schmitt-trigger input ensures reliable operation by providing noise immunity.
Detailed Application Field Plans
The SN74F21D can be used in various digital logic applications, including:
- Data processing systems
- Arithmetic circuits
- Control systems
- Communication equipment
- Industrial automation
Detailed and Complete Alternative Models
- SN74F08D: Quad 2-input Positive-AND Gate
- SN74F32D: Quad 2-input Positive-OR Gate
- SN74F74D: Dual D-type Positive-Edge-Triggered Flip-Flop
These alternative models offer similar functionality to the SN74F21D and can be used as replacements depending on specific application requirements.
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Énumérez 10 questions et réponses courantes liées à l'application de SN74F21D dans les solutions techniques
Sure! Here are 10 common questions and answers related to the application of SN74F21D in technical solutions:
Q: What is SN74F21D? A: SN74F21D is a dual 4-input positive-AND gate integrated circuit (IC) that can be used in various digital logic applications.
Q: What is the operating voltage range for SN74F21D? A: The operating voltage range for SN74F21D is typically between 4.5V and 5.5V.
Q: What is the maximum output current of SN74F21D? A: The maximum output current of SN74F21D is around 8mA.
Q: Can SN74F21D be used in high-speed applications? A: Yes, SN74F21D is designed for high-speed operation and can be used in applications with fast switching requirements.
Q: How many inputs does SN74F21D have? A: SN74F21D has two independent 4-input AND gates, so it has a total of 8 inputs.
Q: What is the propagation delay of SN74F21D? A: The typical propagation delay of SN74F21D is around 9 nanoseconds.
Q: Can SN74F21D be used in both TTL and CMOS logic systems? A: Yes, SN74F21D is compatible with both TTL and CMOS logic levels, making it versatile for different system designs.
Q: Does SN74F21D have built-in protection against electrostatic discharge (ESD)? A: Yes, SN74F21D is designed with ESD protection to prevent damage from static electricity.
Q: Can SN74F21D be used in battery-powered applications? A: Yes, SN74F21D can be used in battery-powered applications as it operates within the typical voltage range of most batteries.
Q: What is the package type for SN74F21D? A: SN74F21D is available in various package types, such as SOIC (Small Outline Integrated Circuit) and PDIP (Plastic Dual In-line Package).
Please note that these answers are general and may vary depending on specific datasheet specifications or application requirements.