Encyclopedia Entry: 74HC74D

Product Overview

• Category: Integrated Circuit (IC)
• Use: Flip-Flop
• Characteristics: Dual D-type positive-edge-triggered flip-flop, high-speed operation, low power consumption
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Digital logic component used for storing and transferring binary data
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage: 2V to 6V
• Operating Temperature: -40°C to +85°C
• Propagation Delay: 12 ns (typical)
• Output Current: ±25 mA
• Logic Family: HC (High-Speed CMOS)

Detailed Pin Configuration

The 74HC74D IC has a total of 14 pins. The pin configuration is as follows:

1. CLR (Clear Input)
2. D (Data Input)
3. CLK (Clock Input)
4. GND (Ground)
5. Q1 (Flip-Flop Output 1)
6. Q1' (Complementary Output 1)
7. Q2 (Flip-Flop Output 2)
8. Q2' (Complementary Output 2)
9. VCC (Positive Power Supply)

Functional Features

• Dual D-type positive-edge-triggered flip-flop with clear functionality
• High-speed operation allows for efficient data transfer
• Low power consumption makes it suitable for battery-powered devices
• Clear input enables resetting the flip-flop to a known state
• Complementary outputs provide both inverted and non-inverted signals

Advantages and Disadvantages

Advantages: - Fast operation speed facilitates high-performance applications - Low power consumption extends battery life in portable devices - Compact SOIC package offers space-saving benefits - Clear input allows for easy reset of the flip-flop

Disadvantages: - Limited voltage range (2V to 6V) may restrict certain applications - Propagation delay of 12 ns may be relatively high for some high-speed applications

Working Principles

The 74HC74D is a positive-edge-triggered flip-flop, meaning it captures and stores data on the rising edge of the clock signal. The D input determines the state of the flip-flop, which is transferred to the outputs upon each clock transition. The clear input can be used to reset the flip-flop to a known state.

Detailed Application Field Plans

The 74HC74D IC finds applications in various digital systems where the storage and transfer of binary data are required. Some common application fields include: 1. Digital communication systems 2. Microcontrollers and microprocessors 3. Data storage devices 4. Industrial automation 5. Consumer electronics

Detailed and Complete Alternative Models

• 74LS74: Low-power Schottky version with similar functionality
• CD4013: CMOS dual D-type flip-flop with additional features
• SN74LVC74A: Low-voltage CMOS flip-flop with improved performance

Note: This is not an exhaustive list; there are several alternative models available in the market.

In conclusion, the 74HC74D is a dual D-type positive-edge-triggered flip-flop integrated circuit. Its high-speed operation, low power consumption, and compact package make it suitable for various digital applications. However, its limited voltage range and propagation delay should be considered when selecting alternatives for specific requirements.