SN74HC21NG4

Product Overview

Category

SN74HC21NG4 belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in digital logic applications.

Characteristics

• High-speed operation
• Low power consumption
• Wide operating voltage range
• Compatibility with TTL inputs
• Schmitt-trigger inputs for noise immunity

Package

SN74HC21NG4 is available in a 14-pin DIP (Dual In-line Package) format.

Essence

The essence of SN74HC21NG4 lies in its ability to perform logical AND operations on two input signals.

Packaging/Quantity

SN74HC21NG4 is typically packaged in reels or tubes, with quantities varying based on customer requirements.

Specifications

• Supply Voltage: 2V to 6V
• Input Voltage: 0V to VCC
• Output Voltage: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 9 ns (max)
• Power Dissipation: 500 mW (max)

Detailed Pin Configuration

1. A Input
2. B Input
3. Y Output
4. GND (Ground)
5. A Input
6. B Input
7. Y Output
8. VCC (Supply Voltage)
9. B Input
10. A Input
11. Y Output
12. GND (Ground)
13. B Input
14. A Input

Functional Features

SN74HC21NG4 is a dual 4-input positive-AND gate. It performs logical AND operations on four input signals, producing an output signal based on the logical combination of these inputs. The Schmitt-trigger inputs ensure noise immunity and reliable operation in various environments. This IC operates at high speeds while consuming low power, making it suitable for a wide range of digital logic applications.

Advantages and Disadvantages

Advantages

• High-speed operation enables efficient processing of input signals.
• Low power consumption reduces energy requirements.
• Wide operating voltage range allows compatibility with different systems.
• Schmitt-trigger inputs provide noise immunity, ensuring reliable operation.

Disadvantages

• Limited number of inputs (four) may restrict the complexity of logical operations that can be performed.
• Propagation delay time may affect real-time applications requiring immediate response.

Working Principles

SN74HC21NG4 operates based on the principles of digital logic. It performs logical AND operations by evaluating the input signals and producing an output signal based on their logical combination. The Schmitt-trigger inputs ensure that the input signals are properly interpreted, even in the presence of noise or fluctuations. This IC utilizes transistors and other electronic components to achieve its functionality.

Detailed Application Field Plans

SN74HC21NG4 finds applications in various fields where logical AND operations are required. Some potential application areas include: - Digital signal processing - Microcontroller-based systems - Communication systems - Industrial automation - Robotics

Detailed and Complete Alternative Models

1. SN74HC08N: Quad 2-input positive-AND gate
2. SN74LS21N: Dual 4-input positive-AND gate
3. CD4081BE: Quad 2-input AND gate
4. MC14081B: Quad 2-input AND gate
5. 74HCT21: Dual 4-input positive-AND gate

These alternative models offer similar functionality to SN74HC21NG4 and can be considered as substitutes depending on specific requirements.

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