SN74S74DRG4

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 transferring 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 to VCC + 0.5V
• Low-Level Input Voltage: -0.5V to 0.8V
• High-Level Output Voltage: VCC - 0.5V
• Low-Level Output Voltage: 0.5V
• Maximum Operating Frequency: 25MHz
• Propagation Delay Time: 15ns
• Set-Up Time: 10ns
• Hold Time: 5ns

Detailed Pin Configuration

The SN74S74DRG4 has a total of 14 pins, which are assigned as follows:

1. CLR (Clear) - Active LOW clear input
2. D1 (Data Input 1) - Data input for the first flip-flop
3. CLK (Clock) - Clock input for both flip-flops
4. D2 (Data Input 2) - Data input for the second flip-flop
5. Q1 (Output 1) - Output of the first flip-flop
6. Q1' (Complementary Output 1) - Complementary output of the first flip-flop
7. GND (Ground) - Ground reference
8. Q2' (Complementary Output 2) - Complementary output of the second flip-flop
9. Q2 (Output 2) - Output of the second flip-flop
10. PRE (Preset) - Active LOW preset input
11. PR' (Complementary Preset) - Complementary preset input
12. CLR' (Complementary Clear) - Complementary clear input
13. VCC (Positive Power Supply) - Positive power supply voltage
14. PR (Preset) - Active HIGH preset input

Functional Features

The SN74S74DRG4 is a dual D-type positive-edge-triggered flip-flop IC. It is designed to store and transfer binary data in digital systems. The flip-flops are triggered by the rising edge of the clock signal, allowing the input data to be latched and propagated to the outputs. The IC features separate clear and preset inputs for each flip-flop, providing flexibility in controlling the state of the outputs.

Advantages and Disadvantages

Advantages: - Dual flip-flop configuration allows for efficient storage and transfer of binary data - Positive-edge triggering ensures reliable operation in synchronous systems - Separate clear and preset inputs provide flexibility in controlling the outputs - Wide supply voltage range allows compatibility with various digital systems

Disadvantages: - Limited maximum operating frequency compared to some other flip-flop ICs - Propagation delay time may impact timing-sensitive applications

Working Principles

The SN74S74DRG4 operates based on the principles of sequential logic. When the clock signal transitions from low to high (rising edge), the flip-flops capture the input data and store it until the next clock cycle. The stored data is then available at the outputs. The clear and preset inputs allow for forced output states, overriding the stored data when activated.

Detailed Application Field Plans

The SN74S74DRG4 is commonly used in various digital systems where the storage and transfer of binary data is required. Some specific application fields include:

1. Microcontrollers and Microprocessors: Used for register storage and data transfer.
2. Communication Systems: Employed in data buffering and synchronization circuits.
3. Digital Signal Processing: Utilized for temporary data storage and pipeline control.
4. Industrial Automation: Integrated into control systems for sequential operations.
5. Consumer Electronics: Found in devices such as TVs, DVD players, and gaming consoles.

Detailed and Complete Alternative Models

1. SN74LS74AN: Similar dual D-type positive-edge-triggered flip-flop IC with a wider supply voltage range.
2. CD4013BE: Dual D-type flip-flop IC with complementary outputs and higher maximum operating frequency.
3. MC74HC74AN: Dual D-type flip-flop IC with separate clear and preset inputs and improved propagation delay time.

These alternative models offer similar functionality to the SN74S74DRG4 but may have different specifications and package options.

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