SN74AC74DRE4

Product Overview

• Category: Integrated Circuit
• Use: Flip-Flop
• Characteristics: Dual D-Type Positive-Edge-Triggered Flip-Flop
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Digital Logic IC for sequential logic applications
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

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 SN74AC74DRE4 has a total of 14 pins:

1. CLR (Clear) - Active LOW input for clearing the flip-flop
2. D (Data) - Data input for the flip-flop
3. CLK (Clock) - Clock input for triggering the flip-flop
4. PR (Preset) - Active LOW input for setting the flip-flop
5. Q (Output) - Output of the flip-flop
6. Q̅ (Complementary Output) - Complementary output of the flip-flop
7. GND (Ground) - Ground reference for the IC
8. Q̅ (Complementary Output) - Complementary output of the flip-flop
9. Q (Output) - Output of the flip-flop
10. VCC (Positive Power Supply) - Positive power supply for the IC
11. D (Data) - Data input for the flip-flop
12. CLK (Clock) - Clock input for triggering the flip-flop
13. PR (Preset) - Active LOW input for setting the flip-flop
14. CLR (Clear) - Active LOW input for clearing the flip-flop

Functional Features

• Dual D-Type Positive-Edge-Triggered Flip-Flop
• High-speed operation with a maximum propagation delay of 6ns
• Asynchronous clear and preset inputs for easy initialization
• Edge-triggered clock input for synchronized operation
• Complementary outputs for flexible logic design

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient sequential logic applications - Asynchronous clear and preset inputs provide flexibility in initializing the flip-flop - Complementary outputs enable versatile logic design

Disadvantages: - Limited supply voltage range (2V to 6V) - Operating temperature range may not be suitable for extreme environments

Working Principles

The SN74AC74DRE4 is a dual D-type positive-edge-triggered flip-flop. It operates based on the rising edge of the clock signal. The data input (D) is captured and stored when the clock signal transitions from low to high. The stored data can be cleared or set using the asynchronous clear (CLR) and preset (PR) inputs, respectively. The complementary outputs (Q and Q̅) provide the logical inverse of each other.

Detailed Application Field Plans

The SN74AC74DRE4 is widely used in various digital systems and applications, including:

1. Microprocessors and microcontrollers
2. Communication systems
3. Data storage devices
4. Industrial automation
5. Automotive electronics
6. Consumer electronics

Detailed and Complete Alternative Models

1. SN74AC74DR - Similar specifications and pin configuration, but without the "E4" suffix.
2. SN74ACT74D - Alternative version with different characteristics and operating voltage range.
3. SN74HC74D - Alternative version with different characteristics and package type.

These alternative models can be considered based on specific requirements and compatibility with the target application.

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