Encyclopedia Entry: 74ACT74SC

Product Overview

Category

The 74ACT74SC belongs to the category of integrated circuits (ICs) and specifically falls under the family of flip-flops.

Use

This product is primarily used for storing and transferring digital data in electronic circuits. It serves as a fundamental building block in various applications, including digital logic design, microprocessors, and communication systems.

Characteristics

• The 74ACT74SC is a dual D-type positive-edge-triggered flip-flop.
• It operates on a wide voltage range, typically between 2V and 6V.
• This IC offers high-speed performance with low power consumption.
• It features complementary outputs, making it suitable for driving various loads.
• The 74ACT74SC exhibits excellent noise immunity, ensuring reliable operation in noisy environments.

Package and Quantity

The 74ACT74SC is available in a small-outline integrated circuit (SOIC) package. Each package contains one unit of the IC.

Essence

The essence of the 74ACT74SC lies in its ability to store and synchronize digital signals, enabling precise timing and sequential operations within electronic systems.

Packaging/Quantity

The 74ACT74SC is typically packaged in reels or tubes, with each reel containing approximately 2500 units.

Specifications

• Supply Voltage Range: 2V to 6V
• High-Level Input Voltage: 2V to Vcc
• Low-Level Input Voltage: GND to 0.8V
• High-Level Output Voltage: Vcc - 0.5V
• Low-Level Output Voltage: 0.5V
• Maximum Operating Frequency: 100 MHz
• Propagation Delay Time: 7 ns
• Power Dissipation: 20 mW

Detailed Pin Configuration

The 74ACT74SC has a total of 14 pins, each serving a specific function. The pin configuration is as follows:

1. CLR (Clear) - Clear input
2. D1 (Data Input 1) - Data input for flip-flop 1
3. CLK1 (Clock Input 1) - Clock input for flip-flop 1
4. PR1 (Preset Input 1) - Preset input for flip-flop 1
5. Q1 (Output 1) - Output for flip-flop 1
6. Q̅1 (Complementary Output 1) - Complementary output for flip-flop 1
7. GND (Ground) - Ground reference
8. Q̅2 (Complementary Output 2) - Complementary output for flip-flop 2
9. Q2 (Output 2) - Output for flip-flop 2
10. PR2 (Preset Input 2) - Preset input for flip-flop 2
11. CLK2 (Clock Input 2) - Clock input for flip-flop 2
12. D2 (Data Input 2) - Data input for flip-flop 2
13. SET (Set) - Set input
14. Vcc (Supply Voltage) - Positive supply voltage

Functional Features

The 74ACT74SC offers the following functional features:

• Dual flip-flop design allows independent operation of two separate data inputs.
• Positive-edge-triggered functionality ensures synchronized data transfer.
• Clear and preset inputs enable initialization and control of the flip-flops.
• Complementary outputs facilitate driving different logic levels and loads.

Advantages and Disadvantages

Advantages

• High-speed performance enables efficient data processing.
• Wide operating voltage range provides flexibility in various applications.
• Excellent noise immunity ensures reliable operation in noisy environments.
• Compact SOIC package allows for space-efficient circuit designs.

Disadvantages

• Limited number of flip-flops per IC may require multiple units for complex applications.
• Lack of built-in protection features may make the IC susceptible to damage from voltage spikes or electrostatic discharge.

Working Principles

The 74ACT74SC operates based on the principles of positive-edge-triggered flip-flops. When a rising edge is detected at the clock input, the data present at the D inputs is transferred to the corresponding Q outputs. The clear and preset inputs allow for initialization and control of the flip-flops' states.

Detailed Application Field Plans

The 74ACT74SC finds extensive use in various electronic applications, including:

1. Digital Logic Design: It serves as a fundamental component for sequential logic circuits, such as counters, shift registers, and state machines.
2. Microprocessors: The IC is utilized in microprocessor systems for tasks like register storage, synchronization, and control signal generation.
3. Communication Systems: It plays a crucial role in communication systems, enabling precise timing and synchronization of data transmission.

Detailed and Complete Alternative Models

There are several alternative models