SN74AC74D

Product Overview

• Category: Integrated Circuit (IC)
• Use: Flip-Flop
• Characteristics: Dual D-Type Positive-Edge-Triggered Flip-Flop
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Digital Logic IC for storing and manipulating binary data
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage Range: 2V to 6V
• High-Level Input Voltage: 2V to VCC + 0.5V
• Low-Level Input Voltage: -0.5V to 0.8V
• High-Level Output Current: -24mA
• Low-Level Output Current: 24mA
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The SN74AC74D has a total of 14 pins, which are assigned as follows:

1. CLR (Clear) - Clear input
2. D (Data) - Data input
3. CLK (Clock) - Clock input
4. PR (Preset) - Preset input
5. Q (Output) - Output
6. Q̅ (Complementary Output) - Complementary output
7. GND (Ground) - Ground reference
8. Q̅ (Complementary Output) - Complementary output
9. Q (Output) - Output
10. VCC (Positive Power Supply) - Positive power supply
11. D (Data) - Data input
12. CLK (Clock) - Clock input
13. PR (Preset) - Preset input
14. CLR (Clear) - Clear input

Functional Features

The SN74AC74D is a dual D-type positive-edge-triggered flip-flop. It can store one bit of binary data per flip-flop. The flip-flop is triggered by the rising edge of the clock signal, allowing the data input to be latched and stored in the flip-flop. The complementary outputs (Q and Q̅) provide the inverted value of the stored data.

Advantages and Disadvantages

Advantages: - Dual flip-flop configuration allows for efficient storage and manipulation of binary data. - Positive-edge triggering ensures reliable operation with synchronous systems. - Wide supply voltage range allows for flexibility in various applications. - High-level output current capability enables driving of external loads.

Disadvantages: - Limited to positive-edge triggering, not suitable for negative-edge-triggered applications. - Requires an external clock signal for proper operation. - May consume relatively higher power compared to alternative low-power flip-flops.

Working Principles

The SN74AC74D operates based on the principles of digital logic. When the clock signal rises from a low to high level, the flip-flop captures and stores the data present at the D input. The stored data is then available at the Q and Q̅ outputs. The CLR and PR inputs allow for clearing or presetting the flip-flop to specific states.

Detailed Application Field Plans

The SN74AC74D is commonly used in various digital systems and applications, including but not limited to: - Sequential logic circuits - Data storage and retrieval systems - Counters and frequency dividers - State machines and control units - Microcontrollers and microprocessors

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the SN74AC74D are: - CD4013B: CMOS Dual D-Type Flip-Flop - 74HC74: Dual D-Type Flip-Flop with Set and Reset - MC74ACT74: Dual D-Type Flip-Flop with Preset and Clear

These alternative models offer similar functionality and can be used as replacements depending on specific requirements and compatibility with the existing system.

In conclusion, the SN74AC74D is a dual D-type positive-edge-triggered flip-flop IC. It is widely used in digital systems for storing and manipulating binary data. With its reliable operation, wide supply voltage range, and high-level output current capability, it finds applications in various fields such as sequential logic circuits, data storage systems, and microcontrollers. Alternative models like CD4013B, 74HC74, and MC74ACT74 can be considered based on specific needs.