SN74ACT74DRE4

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: 4.5V to 5.5V
• High-Level Input Voltage: 2V
• Low-Level Input Voltage: 0.8V
• High-Level Output Voltage: 3.7V
• Low-Level Output Voltage: 0.4V
• Maximum Operating Frequency: 100MHz
• Propagation Delay Time: 6ns
• Set-Up Time: 10ns
• Hold Time: 2ns

Detailed Pin Configuration

The SN74ACT74DRE4 has a total of 14 pins. The pin configuration is as follows:

1. CLR (Clear) - Active LOW clear input
2. D (Data) - Data input
3. CLK (Clock) - Clock input
4. PR (Preset) - Active LOW preset input
5. Q (Output) - First flip-flop output
6. Q̅ (Complementary Output) - Complementary output of the first flip-flop
7. GND (Ground) - Ground reference
8. Q̅ (Complementary Output) - Complementary output of the second flip-flop
9. Q (Output) - Second flip-flop output
10. PRE (Preset) - Active LOW preset input
11. CLK (Clock) - Clock input
12. D (Data) - Data input
13. CLR (Clear) - Active LOW clear input
14. VCC (Supply Voltage) - Positive supply voltage

Functional Features

The SN74ACT74DRE4 is a dual D-type positive-edge-triggered flip-flop. It is designed to store and transfer data in sequential logic applications. The flip-flop operates on the rising edge of the clock signal, allowing for synchronized data storage and transfer. It features an active LOW clear input and an active LOW preset input, which can be used to asynchronously reset or set the flip-flop outputs.

Advantages and Disadvantages

Advantages: - Dual flip-flop configuration allows for efficient data storage and transfer - Positive-edge triggering ensures synchronized operation - Wide supply voltage range allows for flexibility in different applications - Fast propagation delay time enables high-speed operation

Disadvantages: - Limited operating frequency compared to some other flip-flop ICs - Requires external clock signal for proper operation

Working Principles

The SN74ACT74DRE4 operates based on the principles of sequential logic. When the clock signal rises from LOW to HIGH, the data present at the D input is transferred to the Q output. Simultaneously, the complementary output Q̅ reflects the inverse of the Q output. The state of the flip-flop can be cleared using the CLR input or set using the PR input, both of which are active LOW signals.

Detailed Application Field Plans

The SN74ACT74DRE4 can be used in various applications that require sequential logic and data storage. Some potential application fields include:

1. Digital counters and dividers
2. Shift registers
3. Data synchronization circuits
4. State machines
5. Control systems

Detailed and Complete Alternative Models

1. SN74ACT74DR - Similar specifications and pin configuration, but without the "E4" suffix indicating RoHS compliance.
2. SN74HC74D - High-Speed CMOS version with similar functionality but different characteristics.
3. SN74LS74AN - Low-power Schottky TTL version with similar functionality but different characteristics.

These alternative models provide options with varying performance characteristics and compatibility with different logic families.

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