SN74HC02D

Product Overview

Category

SN74HC02D belongs to the category of integrated circuits (ICs).

Use

It is commonly used as a quad 2-input NOR gate.

Characteristics

• High-speed CMOS technology
• Low power consumption
• Wide operating voltage range: 2V to 6V
• Schmitt-trigger inputs for noise immunity
• Available in various package options

Package and Quantity

SN74HC02D is available in a standard 14-pin dual in-line package (DIP). It is typically sold in reels or tubes containing multiple units.

Specifications

Electrical Characteristics

• Supply Voltage Range: 2V to 6V
• Input Voltage Range: 0V to Vcc
• Output Voltage Range: 0V to Vcc
• Operating Temperature Range: -40°C to +85°C

Timing Characteristics

• Propagation Delay: 9 ns (max)
• Transition Time: 10 ns (max)

Pin Configuration

The pin configuration of SN74HC02D is as follows:

┌───┐ A1 -|1 14|- Vcc B1 -|2 13|- Y1 A2 -|3 12|- B2 B2 -|4 11|- A3 Y2 -|5 10|- B3 GND -|6 9|- A4 Y3 -|7 8|- B4 └───┘

Functional Features

Quad 2-Input NOR Gate

SN74HC02D consists of four independent 2-input NOR gates. Each gate performs the logical NOR operation on its two inputs and provides an output.

Schmitt-Trigger Inputs

The Schmitt-trigger inputs ensure noise immunity by providing hysteresis. This allows the circuit to tolerate noisy input signals without causing false triggering.

High-Speed CMOS Technology

SN74HC02D utilizes high-speed CMOS technology, enabling fast switching times and efficient operation.

Advantages and Disadvantages

Advantages

• Low power consumption
• Wide operating voltage range
• Noise immunity due to Schmitt-trigger inputs
• Compact size and easy integration into various electronic circuits

Disadvantages

• Limited number of gates per package
• Not suitable for high-frequency applications

Working Principles

SN74HC02D operates based on the principles of digital logic. The NOR gate performs the logical NOR operation on its inputs, producing a low output only when both inputs are high.

Application Field Plans

Digital Logic Circuits

SN74HC02D is widely used in digital logic circuits for various applications, including: - Data processing systems - Arithmetic units - Memory devices - Control systems

Signal Conditioning

The Schmitt-trigger inputs make SN74HC02D suitable for signal conditioning applications where noise immunity is crucial. It can be used to clean up noisy signals and provide reliable outputs.

Industrial Automation

SN74HC02D finds application in industrial automation systems, such as PLCs (Programmable Logic Controllers), where it is used for logical operations and control functions.

Alternative Models

There are several alternative models available that serve similar purposes to SN74HC02D. Some popular alternatives include: - 74LS02 - CD4001 - MC14093

These alternatives offer similar functionality but may have different specifications or package options.

In conclusion, SN74HC02D is a quad 2-input NOR gate integrated circuit that offers high-speed operation, low power consumption, and noise immunity. It finds applications in digital logic circuits, signal conditioning, and industrial automation.