SN74HC74DRE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Flip-Flop
• Characteristics: High-speed, dual D-type flip-flop with set and reset
• Package: SOIC-14
• Essence: The SN74HC74DRE4 is a versatile integrated circuit that provides two D-type flip-flops with set and reset functionality. It is designed for high-speed applications and is commonly used in digital electronics projects.
• Packaging/Quantity: The SN74HC74DRE4 is typically sold in reels or tubes, containing 250 units per package.

Specifications

• Supply Voltage Range: 2V to 6V
• High-Level Input Voltage: 2V
• Low-Level Input Voltage: 0.8V
• High-Level Output Voltage: 4.4V
• Low-Level Output Voltage: 0.5V
• Maximum Operating Frequency: 85 MHz
• Propagation Delay Time: 13 ns
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74HC74DRE4 has a total of 14 pins, which are assigned specific functions:

1. CLR (Clear) - Active low clear input
2. D1 (Data Input 1) - Data input for flip-flop 1
3. CLK1 (Clock Input 1) - Clock input for flip-flop 1
4. PRE1 (Preset Input 1) - Active low preset input for flip-flop 1
5. Q1 (Output 1) - Output of flip-flop 1
6. Q̅1 (Complementary Output 1) - Complementary output of flip-flop 1
7. GND (Ground) - Ground reference
8. Q̅2 (Complementary Output 2) - Complementary output of flip-flop 2
9. Q2 (Output 2) - Output of flip-flop 2
10. PRE2 (Preset Input 2) - Active low preset input for flip-flop 2
11. CLK2 (Clock Input 2) - Clock input for flip-flop 2
12. D2 (Data Input 2) - Data input for flip-flop 2
13. SET (Set) - Active low set input
14. VCC (Supply Voltage) - Positive supply voltage

Functional Features

• Dual D-type flip-flop with independent set and reset functionality
• High-speed operation suitable for time-critical applications
• Wide operating voltage range allows compatibility with various digital systems
• Low power consumption for energy-efficient designs
• Schmitt-trigger inputs provide noise immunity and enhanced signal integrity
• Direct interface with TTL logic levels

Advantages and Disadvantages

Advantages: - Versatile and widely used in digital electronics projects - High-speed operation enables efficient data processing - Independent set and reset functionality provides flexibility in circuit design - Wide operating voltage range ensures compatibility with different systems - Low power consumption contributes to energy efficiency

Disadvantages: - Limited number of flip-flops per package (only two in the case of SN74HC74DRE4) - Not suitable for applications requiring a large number of flip-flops - May require additional external components for certain applications

Working Principles

The SN74HC74DRE4 is based on the principles of sequential logic, specifically D-type flip-flops. Each flip-flop consists of a master-slave configuration, where the master latch captures the input data during the rising edge of the clock signal, and the slave latch holds the captured data until the next clock cycle.

The set and reset inputs allow for the forced setting or resetting of the flip-flops, overriding the normal operation. The outputs provide the stored data and its complement.

Detailed Application Field Plans

The SN74HC74DRE4 is commonly used in various digital applications, including:

1. Counters and frequency dividers
2. Shift registers
3. Data storage and retrieval systems
4. State machines and control circuits
5. Clock synchronization and distribution networks
6. Memory address decoding
7. Digital signal processing
8. Communication systems

Detailed and Complete Alternative Models

1. SN74HC74N: Similar to SN74HC74DRE4 but in a DIP-14 package.
2. MC74HC74A: Dual D-type flip-flop with set and reset, available in SOIC-14 package.
3. CD4013BE: CMOS dual D-type flip-flop with set and reset, offered in DIP-14 package.
4. 74LS74: TTL dual D-type flip-flop with set and reset, available in various packages.

These alternative models offer similar functionality and can be used as substitutes for