SN74HC74DR

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: The SN74HC74DR is a dual D-type flip-flop IC that operates at high speed and is triggered by positive edges of the clock signal.
• Packaging/Quantity: The SN74HC74DR is available in a reel packaging with 2500 units per reel.

Specifications

• Supply Voltage: 2V to 6V
• Logic Family: HC
• Number of Flip-Flops: 2
• Clock Trigger Type: Positive Edge
• Propagation Delay: 13 ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74HC74DR has a total of 14 pins. The pin configuration is as follows:

1. CLR (Clear Input) - Active Low
2. D1 (Data Input for Flip-Flop 1)
3. CLK (Clock Input)
4. GND (Ground)
5. D2 (Data Input for Flip-Flop 2)
6. Q2 (Output of Flip-Flop 2)
7. Q1 (Output of Flip-Flop 1)
8. VCC (Supply Voltage)

9-14. Not Used (NC)

Functional Features

• Dual D-Type Flip-Flop: The SN74HC74DR contains two independent D-type flip-flops in a single package.
• Positive Edge Triggered: The flip-flops are triggered by the rising edge of the clock signal.
• High-Speed Operation: The IC operates at high speed, allowing for quick data storage and retrieval.
• Clear Input: The clear input allows for resetting the flip-flops to a known state.

Advantages and Disadvantages

Advantages

• High-Speed Operation: The SN74HC74DR is designed for high-speed applications, making it suitable for time-critical tasks.
• Dual Flip-Flop: The presence of two independent flip-flops in a single package provides space-saving benefits and simplifies circuit design.

Disadvantages

• Limited Voltage Range: The IC operates within a supply voltage range of 2V to 6V, which may not be suitable for all applications requiring different voltage levels.
• Single Trigger Type: The flip-flops are triggered only by positive edges of the clock signal, limiting their compatibility with certain systems that require negative edge triggering.

Working Principles

The SN74HC74DR is based on D-type flip-flop logic. Each flip-flop consists of a data input (D), a clock input (CLK), and an output (Q). When a positive edge is detected on the CLK input, the value present at the D input is transferred to the Q output. The CLR input can be used to reset the flip-flops to a known state.

Detailed Application Field Plans

The SN74HC74DR is commonly used in various digital systems and applications, including:

1. Counters and Registers: The flip-flops can be used as building blocks for counters and registers in digital circuits.
2. Data Storage: The IC is suitable for storing temporary data in microcontrollers and other digital devices.
3. Synchronous Systems: The positive-edge triggering makes it compatible with synchronous systems where data needs to be synchronized with a clock signal.

Detailed and Complete Alternative Models

• SN74HC74N: Similar to SN74HC74DR but available in a DIP (Dual In-line Package) format.
• CD4013BE: Dual D-Type Flip-Flop IC from Texas Instruments with similar functionality.

These alternative models offer similar features and can be used as replacements for the SN74HC74DR in various applications.

Word Count: 456 words