SN74AHCT74DR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Flip-Flop
• Characteristics: High-speed, low-power, dual D-type positive-edge-triggered flip-flop
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Digital logic component for storing and manipulating binary data
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• High-Level Input Voltage: 2V
• Low-Level Input Voltage: 0.8V
• High-Level Output Voltage: 4.4V
• Low-Level Output Voltage: 0.1V
• Maximum Operating Frequency: 100MHz
• Propagation Delay Time: 9ns
• Set-up Time: 7ns
• Hold Time: 3ns

Detailed Pin Configuration

The SN74AHCT74DR has a total of 14 pins, which are assigned as follows:

1. CLR (Clear) - Active LOW clear input
2. D1 (Data Input 1) - First data input
3. CLK (Clock) - Clock input
4. D2 (Data Input 2) - Second data input
5. Q1 (Flip-Flop 1 Output) - First flip-flop output
6. Q1̅ (Complementary Output of Flip-Flop 1) - Complementary output of the first flip-flop
7. GND (Ground) - Ground reference
8. Q2̅ (Complementary Output of Flip-Flop 2) - Complementary output of the second flip-flop
9. Q2 (Flip-Flop 2 Output) - Second flip-flop output
10. PRE (Preset) - Active LOW preset input
11. PR̅E (Complementary Input of Preset) - Complementary input of the preset
12. VCC (Positive Power Supply) - Positive power supply voltage
13. OE (Output Enable) - Active LOW output enable input
14. Q2 (Flip-Flop 2 Output) - Second flip-flop output

Functional Features

• Dual D-type positive-edge-triggered flip-flop with clear and preset capabilities
• High-speed operation, suitable for applications requiring quick data storage and retrieval
• Low-power consumption, making it ideal for battery-powered devices
• Wide operating voltage range allows compatibility with various digital systems
• Output enable feature enables easy control of output states
• Complementary outputs provide flexibility in circuit design

Advantages and Disadvantages

Advantages: - High-speed operation - Low-power consumption - Wide operating voltage range - Clear and preset capabilities - Output enable feature

Disadvantages: - Limited number of flip-flops (dual) - Not suitable for applications requiring more than two flip-flops

Working Principles

The SN74AHCT74DR is a dual D-type positive-edge-triggered flip-flop. It stores binary data using two flip-flops that are triggered by the rising edge of the clock signal. The clear and preset inputs allow for initialization of the flip-flop outputs. The output enable input controls the state of the outputs. The flip-flop operates within a specified voltage range and has defined timing characteristics.

Detailed Application Field Plans

The SN74AHCT74DR is commonly used in various digital systems and applications, including:

1. Microcontrollers and microprocessors
2. Data storage and retrieval systems
3. Communication devices
4. Digital signal processing
5. Control systems
6. Consumer electronics
7. Automotive electronics
8. Industrial automation

Detailed and Complete Alternative Models

1. SN74AHCT74N - DIP (Dual In-line Package) version of the SN74AHCT74DR
2. MC74HC74A - Alternative flip-flop with similar characteristics from a different manufacturer
3. CD4013B - CMOS dual D-type flip-flop with additional features like set and reset inputs

These alternative models offer similar functionality and can be used as replacements for the SN74AHCT74DR in various applications.

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