DM74AS74N

Product Overview

• Category: Integrated Circuit (IC)
• Use: Flip-Flop
• Characteristics: Dual D-Type Positive-Edge-Triggered Flip-Flop
• Package: 14-Pin Plastic Dual In-Line Package (DIP)
• Essence: The DM74AS74N is a dual D-type flip-flop IC that operates on positive-edge triggering. It is commonly used in digital circuits for storing and transferring data.
• Packaging/Quantity: Available in reels or tubes, with a quantity of 25 units per reel/tube.

Specifications

• Supply Voltage: 4.75V to 5.25V
• Input Voltage: 0V to VCC
• Output Voltage: 0V to VCC
• Operating Temperature: -55°C to +125°C
• Propagation Delay Time: 15ns (typical)
• Power Dissipation: 500mW (max)

Detailed Pin Configuration

The DM74AS74N has a total of 14 pins, each serving a specific purpose:

1. CLR (Clear) - Asynchronous clear input
2. D1 (Data Input 1) - Data input for the first flip-flop
3. Q1 (Flip-Flop 1 Output) - Output of the first flip-flop
4. Q1̅ (Complementary Output 1) - Complementary output of the first flip-flop
5. GND (Ground) - Ground reference voltage
6. CLK (Clock) - Clock input for positive-edge triggering
7. D2 (Data Input 2) - Data input for the second flip-flop
8. Q2 (Flip-Flop 2 Output) - Output of the second flip-flop
9. Q2̅ (Complementary Output 2) - Complementary output of the second flip-flop
10. PRE (Preset) - Asynchronous preset input
11. VCC (Positive Power Supply) - Positive power supply voltage
12. SET (Set) - Asynchronous set input
13. Q2̅ (Complementary Output 2) - Complementary output of the second flip-flop
14. Q2 (Flip-Flop 2 Output) - Output of the second flip-flop

Functional Features

• Dual D-type flip-flops with individual clear, preset, and clock inputs.
• Positive-edge triggering allows synchronized data transfer.
• Asynchronous clear and preset inputs for immediate state control.
• Complementary outputs provide both normal and inverted signals.

Advantages and Disadvantages

Advantages: - Dual flip-flop design provides flexibility in circuit design. - Positive-edge triggering ensures reliable data transfer. - Asynchronous clear and preset inputs allow for immediate state control.

Disadvantages: - Limited to positive-edge triggering only. - Requires external components for proper operation. - Not suitable for high-speed applications due to propagation delay.

Working Principles

The DM74AS74N operates based on the principles of sequential logic. It consists of two D-type flip-flops that store and transfer data. The flip-flops are triggered by a positive edge of the clock signal, allowing synchronized data transfer from the input to the output. The clear and preset inputs provide immediate control over the stored data, allowing for easy initialization or resetting of the flip-flops.

Detailed Application Field Plans

The DM74AS74N is widely used in various digital circuits and systems, including:

1. Counters and frequency dividers
2. Shift registers
3. Data storage and transfer systems
4. Control and timing circuits
5. Memory address decoding

Its versatility and reliability make it suitable for a wide range of applications where sequential logic and data storage are required.

Detailed and Complete Alternative Models

1. SN74LS74N: Dual D-Type Positive-Edge-Triggered Flip-Flop with similar specifications and pin configuration.
2. CD4013BE: Dual D-Type Flip-Flop with complementary outputs and similar functionality.
3. MC14013BCL: Dual D-Type Flip-Flop with separate clock inputs and complementary outputs.

These alternative models offer similar functionality and can be used as replacements or alternatives to the DM74AS74N, depending on specific requirements and availability.

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