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74HC21DB,112
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74HC21DB,112

Basic Information Overview

  • Category: Integrated Circuit (IC)
  • Use: Logic Gate
  • Characteristics: Dual 4-input AND gate
  • Package: SOIC-14
  • Essence: High-speed CMOS technology
  • Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

  • Supply Voltage Range: 2.0V to 6.0V
  • Input Voltage Range: 0V to VCC
  • Output Voltage Range: 0V to VCC
  • Operating Temperature Range: -40°C to +125°C
  • Propagation Delay: 9 ns (typical)
  • Maximum Quiescent Current: 4 µA at 5.5V

Detailed Pin Configuration

  1. Input A1
  2. Input B1
  3. Input C1
  4. Input D1
  5. Ground (GND)
  6. Output Y1
  7. Output Y2
  8. Input D2
  9. Input C2
  10. Input B2
  11. Input A2
  12. VCC
  13. Output Y3
  14. Output Y4

Functional Features

  • Dual 4-input AND gate with independent inputs
  • High-speed operation due to CMOS technology
  • Wide supply voltage range allows compatibility with various systems
  • Low power consumption in both active and standby modes
  • Schmitt-trigger action on all inputs ensures noise immunity
  • Balanced propagation delays for accurate signal processing

Advantages

  • Versatile logic gate suitable for a wide range of applications
  • High-speed operation enables efficient data processing
  • Low power consumption contributes to energy efficiency
  • Noise immunity provided by Schmitt-trigger action ensures reliable performance
  • Compact package size allows for space-saving designs

Disadvantages

  • Limited number of inputs (4 per gate)
  • May require additional gates for complex logic functions
  • Sensitivity to electrostatic discharge (ESD) requires proper handling precautions

Working Principles

The 74HC21DB,112 is a dual 4-input AND gate that performs logical AND operations on its inputs. It utilizes high-speed CMOS technology, which allows for fast data processing. The Schmitt-trigger action on all inputs ensures noise immunity, making it suitable for applications in noisy environments. The balanced propagation delays ensure accurate signal processing.

Detailed Application Field Plans

The 74HC21DB,112 can be used in various applications, including: 1. Digital logic circuits 2. Data processing systems 3. Microcontroller-based projects 4. Industrial automation 5. Communication equipment

Detailed and Complete Alternative Models

Some alternative models that can be considered as replacements for the 74HC21DB,112 are: 1. SN74LS21N 2. CD4082BE 3. MC14082BCP 4. HCF4082BM1

These alternatives offer similar functionality and can be used interchangeably depending on specific requirements.

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Senaraikan 10 soalan dan jawapan biasa yang berkaitan dengan aplikasi 74HC21DB,112 dalam penyelesaian teknikal

Sure! Here are 10 common questions and answers related to the application of 74HC21DB,112 in technical solutions:

  1. Q: What is the 74HC21DB,112? A: The 74HC21DB,112 is a dual 4-input AND gate integrated circuit (IC) that can be used in various digital logic applications.

  2. Q: What is the operating voltage range for the 74HC21DB,112? A: The operating voltage range for the 74HC21DB,112 is typically between 2V and 6V.

  3. Q: What is the maximum output current of the 74HC21DB,112? A: The maximum output current of the 74HC21DB,112 is around 5.2mA.

  4. Q: Can the 74HC21DB,112 be used as a level shifter? A: Yes, the 74HC21DB,112 can be used as a level shifter to convert signals between different voltage levels.

  5. Q: How many inputs does the 74HC21DB,112 have? A: The 74HC21DB,112 has two independent 4-input AND gates, so it has a total of 8 inputs.

  6. Q: What is the propagation delay of the 74HC21DB,112? A: The propagation delay of the 74HC21DB,112 is typically around 11 nanoseconds.

  7. Q: Can the 74HC21DB,112 be used in high-speed applications? A: Yes, the 74HC21DB,112 is designed for high-speed operation and can be used in applications with fast switching requirements.

  8. Q: Is the 74HC21DB,112 compatible with other logic families? A: Yes, the 74HC21DB,112 is compatible with a wide range of logic families, including TTL and CMOS.

  9. Q: Can the 74HC21DB,112 be used in both parallel and serial data processing applications? A: Yes, the 74HC21DB,112 can be used in both parallel and serial data processing applications, depending on the specific circuit design.

  10. Q: Are there any special considerations for using the 74HC21DB,112 in noisy environments? A: It is recommended to use proper decoupling capacitors and noise filtering techniques when using the 74HC21DB,112 in noisy environments to ensure reliable operation.

Please note that these answers are general and may vary depending on the specific application and requirements.