SN74AHCT74D

Product Overview

• Category: Integrated Circuit (IC)
• Use: Flip-Flop
• Characteristics: High-Speed, Dual D-Type Positive-Edge-Triggered Flip-Flop
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: This IC is designed to store and transfer data in electronic circuits.
• Packaging/Quantity: Available in reels of 2500 units or tubes of 48 units.

Specifications

• Logic Family: AHCT
• Number of Flip-Flops: 2
• Trigger Type: Positive-Edge
• Clock Enable: Yes
• Propagation Delay: 10 ns (typical)
• Operating Voltage Range: 4.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74AHCT74D has a total of 14 pins, which are assigned as follows:

1. CLR (Clear Input) - Active Low
2. D1 (Data Input for Flip-Flop 1)
3. CLK (Clock Input)
4. D2 (Data Input for Flip-Flop 2)
5. Q2 (Output of Flip-Flop 2)
6. Q1 (Output of Flip-Flop 1)
7. GND (Ground)
8. Q1 (Output of Flip-Flop 1)
9. Q2 (Output of Flip-Flop 2)
10. VCC (Positive Power Supply)
11. D2 (Data Input for Flip-Flop 2)
12. CLK (Clock Input)
13. D1 (Data Input for Flip-Flop 1)
14. CLR (Clear Input) - Active Low

Functional Features

• Dual D-Type Flip-Flop with individual clear inputs
• Positive-edge triggered clock input
• Outputs can be disabled using the clock enable input
• High-speed operation, suitable for applications requiring fast data transfer
• Low power consumption
• Wide operating voltage and temperature range

Advantages and Disadvantages

Advantages

• Dual flip-flop design allows for independent storage and transfer of two sets of data.
• Positive-edge triggering ensures accurate data capture.
• Clear inputs provide a convenient way to reset the flip-flops.
• Clock enable input allows for easy control of output states.
• High-speed operation enables efficient data transfer.

Disadvantages

• Limited number of flip-flops (2) may not be sufficient for complex applications requiring more storage elements.
• The SOIC package may not be suitable for all circuit board designs or assembly processes.

Working Principles

The SN74AHCT74D is based on D-type flip-flop logic. It stores and transfers data based on the positive edge of the clock signal. When the clock input transitions from low to high, the data present at the D1 and D2 inputs are captured and stored in the respective flip-flops. The outputs Q1 and Q2 reflect the stored data until the next clock transition occurs. The clear inputs CLR can be used to reset the flip-flops to a known state.

Detailed Application Field Plans

The SN74AHCT74D is commonly used in various digital systems and electronic circuits where data storage and transfer are required. Some specific application areas include:

1. Microcontrollers and microprocessors
2. Communication systems
3. Data acquisition systems
4. Memory modules
5. Industrial automation
6. Automotive electronics
7. Consumer electronics

Detailed and Complete Alternative Models

1. SN74AHCT74: Similar to SN74AHCT74D but available in a different package (TSSOP).
2. CD74HCT74: High-Speed CMOS Logic Dual D-Type Flip-Flop.
3. MC74HC74A: Dual D-Type Flip-Flop with Set and Reset.

These alternative models offer similar functionality and can be used as replacements for the SN74AHCT74D in various applications.

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