Encyclopedia Entry: 74AC74SC

Product Overview

Category

The 74AC74SC belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in digital electronics for various applications, including data storage and signal processing.

Characteristics

• The 74AC74SC is a dual D-type flip-flop IC.
• It operates on a supply voltage range of 2V to 6V.
• It has a high-speed operation capability, making it suitable for time-critical applications.
• The IC offers low power consumption, making it energy-efficient.
• It exhibits excellent noise immunity, ensuring reliable performance even in noisy environments.

Package

The 74AC74SC is available in a small outline package (SOIC) format. This package provides ease of handling and compatibility with standard PCB designs.

Essence

The essence of the 74AC74SC lies in its ability to store and manipulate digital information effectively, providing a crucial building block for various electronic systems.

Packaging/Quantity

The 74AC74SC is typically sold in reels or tubes, containing multiple units per package. The exact quantity may vary depending on the supplier.

Specifications

• Supply Voltage Range: 2V to 6V
• Operating Temperature Range: -40°C to +85°C
• Input Voltage High (VIH): 2V to VCC
• Input Voltage Low (VIL): GND to 0.8V
• Output Voltage High (VOH): VCC - 0.5V
• Output Voltage Low (VOL): 0.4V
• Maximum Clock Frequency: 100 MHz

Detailed Pin Configuration

The 74AC74SC features a total of 14 pins, each serving a specific function:

1. CLR (Clear) - Clear input pin
2. D1 (Data 1) - Data input for flip-flop 1
3. CLK1 (Clock 1) - Clock input for flip-flop 1
4. PR (Preset) - Preset input pin
5. Q1 (Output 1) - Output of flip-flop 1
6. Q̅1 (Inverted Output 1) - Inverted output of flip-flop 1
7. GND (Ground) - Ground reference pin
8. Q̅0 (Inverted Output 0) - Inverted output of flip-flop 0
9. Q0 (Output 0) - Output of flip-flop 0
10. CLR (Clear) - Clear input pin
11. D0 (Data 0) - Data input for flip-flop 0
12. CLK0 (Clock 0) - Clock input for flip-flop 0
13. VCC (Supply Voltage) - Positive supply voltage pin
14. PR (Preset) - Preset input pin

Functional Features

The 74AC74SC offers the following functional features:

• Dual D-type flip-flops with individual clear and preset inputs.
• Asynchronous clear and preset inputs allow for easy initialization of the flip-flops.
• High-speed operation enables efficient data storage and retrieval.
• The IC exhibits excellent noise immunity, ensuring reliable performance in noisy environments.
• Low power consumption makes it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages

• High-speed operation allows for time-critical applications.
• Excellent noise immunity ensures reliable performance.
• Low power consumption makes it energy-efficient.
• Compact package size facilitates easy integration into electronic systems.

Disadvantages

• Limited number of flip-flops per IC (dual flip-flops in this case).
• Requires external components for complete system implementation.

Working Principles

The 74AC74SC operates based on the principles of sequential logic. It utilizes flip-flops to store and manipulate digital information. The clock input triggers the flip-flops, allowing data to be stored or transferred between them. The clear and preset inputs provide additional control over the state of the flip-flops, enabling initialization or forced output states.

Detailed Application Field Plans

The 74AC74SC finds applications in various fields, including:

1. Digital communication systems
2. Microcontrollers and microprocessors
3. Data storage devices
4. Signal processing circuits
5. Industrial automation systems

Detailed and Complete Alternative Models

There are several alternative models available that offer similar functionality to the 74AC74SC. Some notable alternatives include:

1. 74HC74: Similar dual D-type flip-flop IC with a wider supply voltage range.
2. CD4013: Dual D-type flip-flop IC with complementary outputs.
3. SN74LS74: Dual D-type flip-flop IC with TTL-compatible inputs and outputs.

These alternative models can be considered based on specific application requirements and