SN74LS21DR

Product Overview

Category

SN74LS21DR belongs to the category of integrated circuits (ICs).

Use

It is commonly used in digital logic applications.

Characteristics

• Low power consumption
• High-speed operation
• Wide operating voltage range

Package

SN74LS21DR is available in a dual in-line package (DIP) with 14 pins.

Essence

The essence of SN74LS21DR lies in its ability to perform logical AND operations on two input signals.

Packaging/Quantity

SN74LS21DR is typically sold in reels or tubes, with each reel or tube containing a specific quantity of ICs.

Specifications

• Supply Voltage: 4.75V to 5.25V
• Operating Temperature Range: -40°C to +85°C
• Logic Family: LS
• Logic Type: AND Gate
• Number of Inputs: 2
• Number of Pins: 14

Detailed Pin Configuration

1. Input A
2. Input B
3. Output Y
4. GND (Ground)
5. Input A
6. Input B
7. Output Y
8. GND (Ground)
9. Input A
10. Input B
11. Output Y
12. GND (Ground)
13. VCC (Supply Voltage)
14. NC (No Connection)

Functional Features

SN74LS21DR is an AND gate IC that performs logical AND operations on two input signals (A and B). The output (Y) is high only when both inputs are high. It operates at high speeds and consumes low power, making it suitable for various digital logic applications.

Advantages and Disadvantages

Advantages

• Low power consumption
• High-speed operation
• Wide operating voltage range
• Compact size

Disadvantages

• Limited number of inputs (only 2)
• Not suitable for complex logic operations

Working Principles

SN74LS21DR works based on the principles of digital logic. It utilizes transistors and other electronic components to perform logical AND operations on two input signals. The output is determined by the logical combination of the inputs, following the truth table of an AND gate.

Detailed Application Field Plans

SN74LS21DR finds applications in various fields, including: 1. Digital electronics 2. Microcontrollers 3. Communication systems 4. Industrial automation 5. Robotics

Detailed and Complete Alternative Models

Some alternative models that can be used as substitutes for SN74LS21DR include: 1. SN74LS08N 2. CD4081BE 3. MC14081BCP 4. 74HC08D

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

In conclusion, SN74LS21DR is a versatile AND gate IC that offers high-speed operation, low power consumption, and wide operating voltage range. It finds applications in various fields and has several alternative models available in the market.