MM74HCT74SJ

Product Overview

• Category: Integrated Circuit (IC)
• Use: Flip-Flop
• Characteristics: High-Speed, CMOS Technology
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Dual D-Type Positive Edge-Triggered Flip-Flop
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

The MM74HCT74SJ is a dual D-type positive edge-triggered flip-flop integrated circuit. It operates on high-speed CMOS technology, making it suitable for various digital applications. The IC comes in a Small Outline Integrated Circuit (SOIC) package, which provides ease of handling and compatibility with standard PCB designs. Each reel of the MM74HCT74SJ contains 2500 units, packaged in tape and reel format.

Detailed Pin Configuration

The MM74HCT74SJ has a total of 14 pins, each serving a specific function. The pin configuration is as follows:

1. CLR (Clear Input)
2. D (Data Input)
3. CLK (Clock Input)
4. GND (Ground)
5. Q (Output)
6. Q̅ (Complementary Output)
7. PRE (Preset Input)
8. VCC (Power Supply)

9-14. Reserved for future use

Functional Features

The MM74HCT74SJ offers several functional features that enhance its usability in digital circuits:

• Positive Edge-Triggered: The flip-flop is triggered by a rising edge of the clock signal, ensuring precise timing control.
• Dual D-Type: The IC includes two independent D-type flip-flops, allowing for simultaneous operation or separate functionality.
• CMOS Technology: The use of Complementary Metal-Oxide-Semiconductor (CMOS) technology ensures low power consumption and high noise immunity.
• Wide Operating Voltage Range: The IC can operate within a wide voltage range, typically between 2V and 6V, making it compatible with various digital systems.

Advantages and Disadvantages

Advantages of the MM74HCT74SJ include:

• High-speed operation
• Low power consumption
• Wide operating voltage range
• Compact SOIC package for easy integration

Disadvantages of the MM74HCT74SJ include:

• Limited number of flip-flops (dual)
• Not suitable for applications requiring more than two flip-flops

Working Principles

The MM74HCT74SJ operates based on the positive edge-triggered D-type flip-flop principle. When the clock signal transitions from low to high (rising edge), the data input (D) is captured and stored in the flip-flop. The stored value appears at the output (Q) and its complement (Q̅). The clear input (CLR) and preset input (PRE) allow for additional control over the flip-flop's state.

Detailed Application Field Plans

The MM74HCT74SJ finds applications in various digital systems, including but not limited to:

1. Sequential Logic Circuits: Used as building blocks for counters, shift registers, and other sequential logic circuits.
2. Data Storage: Employed in memory units and registers to store and retrieve data.
3. Clock Synchronization: Facilitates synchronization of multiple digital components using the clock input.
4. Digital Communication: Enables data transmission and reception in digital communication systems.

Detailed and Complete Alternative Models

Alternative models that serve similar functions to the MM74HCT74SJ include:

1. SN74HC74: Dual D-Type Flip-Flop, available in different packages such as DIP and TSSOP.
2. CD4013B: Dual D-Type Flip-Flop, compatible with a wide range of supply voltages.
3. MC74HC74A: Dual D-Type Flip-Flop, offers enhanced noise immunity and latch-up performance.

These alternative models provide similar functionality to the MM74HCT74SJ and can be considered as replacements based on specific requirements.

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