Encyclopedia Entry: 74ACT821SC

Product Information Overview

• Category: Integrated Circuit (IC)
• Use: Logic Gate
• Characteristics: High-speed, low-power consumption
• Package: Surface Mount
• Essence: Flip-Flop
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

The 74ACT821SC is a high-speed flip-flop integrated circuit that operates on low power. It belongs to the ACT family of logic gates. This IC is designed for use in various digital applications where reliable and efficient data storage is required.

Detailed Pin Configuration

The 74ACT821SC has a total of 20 pins, each serving a specific function. The pin configuration is as follows:

1. Pin 1: Clock Input (CLK)
2. Pin 2: Data Input A (D)
3. Pin 3: Data Input B (D)
4. Pin 4: Data Input C (D)
5. Pin 5: Data Input D (D)
6. Pin 6: Data Input E (D)
7. Pin 7: Data Input F (D)
8. Pin 8: Data Input G (D)
9. Pin 9: Data Input H (D)
10. Pin 10: Output Q
11. Pin 11: Output Q̅ (Q-bar)
12. Pin 12: Set Input (SET)
13. Pin 13: Reset Input (RESET)
14. Pin 14: Enable Input (EN)
15. Pin 15: Ground (GND)
16. Pin 16: VCC (+5V Power Supply)
17. Pin 17: Data Input I (D)
18. Pin 18: Data Input J (D)
19. Pin 19: Data Input K (D)
20. Pin 20: Data Input L (D)

Functional Features

The 74ACT821SC flip-flop offers the following functional features:

• High-speed operation, making it suitable for time-critical applications.
• Low power consumption, ensuring energy efficiency.
• Reliable data storage and retrieval capabilities.
• Multiple data inputs (A-L) for versatile data handling.
• Set and reset inputs for controlling the flip-flop state.
• Enable input for enabling or disabling the flip-flop output.

Advantages and Disadvantages

Advantages of the 74ACT821SC include:

• High-speed operation allows for efficient data processing.
• Low power consumption reduces energy costs.
• Versatile data input options enable flexible data handling.
• Reliable data storage ensures accurate information retention.

Disadvantages of the 74ACT821SC include:

• Limited number of data inputs may restrict certain applications.
• Requires a +5V power supply, which may not be compatible with all systems.

Working Principles

The 74ACT821SC operates based on the principles of flip-flops. It stores and retrieves digital data using its internal memory elements. The clock input triggers the flip-flop to capture and store the data present at the input pins. The set and reset inputs allow for changing the stored data as required. The enable input controls the output state of the flip-flop.

Detailed Application Field Plans

The 74ACT821SC is commonly used in various digital systems and applications, including:

1. Data storage and retrieval systems
2. Digital signal processing
3. Microcontroller-based systems
4. Communication devices
5. Industrial automation

Detailed and Complete Alternative Models

Alternative models that can be considered as alternatives to the 74ACT821SC include:

1. 74HC821: Similar functionality but operates at a lower voltage level.
2. 74LS821: Slower operation but compatible with a wider range of power supplies.
3. 74F821: Faster operation and wider voltage range, but higher power consumption.

These alternative models provide options based on specific requirements and constraints of the application.

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