SN74HC21DE4

Product Overview

Category

SN74HC21DE4 belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in digital logic applications.

Characteristics

• High-speed operation
• Low power consumption
• Wide operating voltage range
• Compatibility with various logic families

Package

SN74HC21DE4 is available in a standard dual in-line package (DIP) format.

Essence

The essence of SN74HC21DE4 lies in its ability to perform logical AND operations on two input signals.

Packaging/Quantity

SN74HC21DE4 is typically sold in reels or tubes, containing a specific quantity of ICs per package.

Specifications

• Supply Voltage: 2V - 6V
• Logic Family: HC
• Number of Inputs: 2
• Output Current: 5.2mA
• Propagation Delay: 9ns
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

SN74HC21DE4 consists of 14 pins, each serving a specific function:

1. Input A
2. Input B
3. Ground (GND)
4. Output Y
5. Output Y
6. Input C
7. Input D
8. VCC (Positive Power Supply)
9. Output Y
10. Output Y
11. Input E
12. Input F
13. Output Y
14. Output Y

Functional Features

SN74HC21DE4 offers the following functional features:

• Dual 4-input positive-AND gates
• Schmitt-trigger inputs for noise immunity
• Balanced propagation delays for synchronization purposes
• High output drive capability for driving capacitive loads

Advantages and Disadvantages

Advantages

• High-speed operation enables efficient data processing
• Low power consumption results in energy efficiency
• Wide operating voltage range allows compatibility with various systems
• Schmitt-trigger inputs provide noise immunity

Disadvantages

• Limited number of inputs (2)
• Propagation delay may affect real-time applications

Working Principles

SN74HC21DE4 operates based on the principles of digital logic. It performs logical AND operations on the input signals, producing the corresponding output based on the truth table for AND gates.

Detailed Application Field Plans

SN74HC21DE4 finds applications in various fields, including:

1. Digital signal processing
2. Microcontroller-based systems
3. Communication systems
4. Industrial automation
5. Robotics

Detailed and Complete Alternative Models

Some alternative models to SN74HC21DE4 include:

1. SN74LS21N
2. CD4081BE
3. MC14021B
4. 74HCT21N
5. CD74HC21E

These models offer similar functionality and can be used as substitutes depending on specific requirements.

In conclusion, SN74HC21DE4 is a versatile integrated circuit that provides high-speed logical AND operations. Its low power consumption, wide operating voltage range, and compatibility with various logic families make it suitable for a wide range of applications. However, its limited number of inputs and propagation delay should be considered when selecting this IC for real-time applications.