Encyclopedia Entry: 74ACT74PC

Product Overview

Category

The 74ACT74PC belongs to the category of integrated circuits (ICs) and specifically falls under the family of flip-flops.

Use

This product is commonly used in digital electronic systems for storing and manipulating binary data. It serves as a fundamental building block for various applications, including sequential logic circuits, counters, registers, and memory units.

Characteristics

• The 74ACT74PC is a dual D-type positive-edge-triggered flip-flop.
• It operates on a wide voltage range, typically between 2V and 6V.
• The flip-flop offers high-speed performance with low power consumption.
• It features complementary outputs, making it suitable for driving both TTL and CMOS logic families.

Package and Quantity

The 74ACT74PC is available in a standard 14-pin plastic dual in-line package (PDIP). It is commonly sold in reels or tubes containing multiple units, with quantities varying based on the supplier and customer requirements.

Specifications

• Supply Voltage Range: 2V to 6V
• High-Level Input Voltage: 2V to VCC
• Low-Level Input Voltage: GND to 0.8V
• High-Level Output Voltage: VCC - 0.5V
• Low-Level Output Voltage: 0.5V
• Maximum Operating Frequency: 100 MHz

Pin Configuration

The 74ACT74PC has a total of 14 pins, each serving a specific function. The pin configuration is as follows:

+---+--+---+ CLR |1 14| VCC D |2 13| CLK CLK |3 12| Q1 Q1 |4 11| Q0 Q0 |5 10| SET SET |6 9| D GND |7 8| CLR +--------+

Functional Features

• Positive-edge-triggered operation: The flip-flop captures and stores the input data (D) at the rising edge of the clock signal (CLK).
• Asynchronous Clear (CLR) and Set (SET) inputs: These inputs allow for immediate resetting or setting of the flip-flop's outputs, regardless of the clock signal.
• Complementary Outputs (Q0 and Q1): The flip-flop provides two output pins that are always in opposite logic states, representing the stored data.

Advantages and Disadvantages

Advantages: - High-speed performance enables efficient data storage and manipulation. - Wide voltage range compatibility allows for versatile integration into various digital systems. - Low power consumption contributes to energy-efficient designs. - Complementary outputs facilitate compatibility with different logic families.

Disadvantages: - Limited functionality: The 74ACT74PC is a basic flip-flop and lacks advanced features found in more complex ICs. - Not suitable for low-voltage applications below 2V.

Working Principles

The 74ACT74PC operates based on the principles of sequential logic. When the clock signal transitions from low to high (rising edge), the flip-flop captures the input data (D) and stores it until the next clock cycle. The stored data can be cleared or set asynchronously using the CLR and SET inputs, respectively.

Application Field Plans

The 74ACT74PC finds extensive use in various digital systems, including but not limited to: - Microprocessors and microcontrollers - Data storage devices - Communication systems - Industrial control systems - Automotive electronics

Alternative Models

For those seeking alternative options, several similar flip-flops can be considered: - 74HC74: A CMOS version with similar functionality but a wider supply voltage range. - 74LS74: A low-power Schottky TTL version with comparable characteristics. - CD4013: A dual D-type flip-flop from the CMOS 4000 series.

These alternative models offer similar functionality and can be used as substitutes based on specific design requirements.

In conclusion, the 74ACT74PC is a versatile integrated circuit commonly used in digital electronic systems. Its high-speed performance, wide voltage range compatibility, and complementary outputs make it suitable for various applications. Designers should consider its advantages, disadvantages, and alternative models when incorporating this flip-flop into their projects.

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