Encyclopedia Entry: 74VHC574N

Product Overview

Category

The 74VHC574N belongs to the category of integrated circuits (ICs) and specifically falls under the family of flip-flops.

Use

This IC is commonly used in digital electronic systems for storing and transferring data. It is primarily employed in applications that require sequential logic operations, such as data registers, counters, and shift registers.

Characteristics

• High-speed operation: The 74VHC574N offers fast switching times, making it suitable for high-frequency applications.
• Low power consumption: This IC is designed to minimize power consumption, making it energy-efficient.
• Wide operating voltage range: It can operate within a wide voltage range, typically between 2V and 5.5V.
• Compatibility: The 74VHC574N is compatible with both TTL (Transistor-Transistor Logic) and CMOS (Complementary Metal-Oxide-Semiconductor) logic families.

Package and Quantity

The 74VHC574N is available in a standard DIP (Dual In-line Package) format. It consists of 20 pins arranged in two rows, with a spacing of 0.1 inches between each pin. It is commonly sold in packs of 10 or more.

Specifications

• Supply Voltage Range: 2V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Maximum Clock Frequency: 100 MHz

Pin Configuration

The 74VHC574N has 20 pins, numbered from 1 to 20. Here is the detailed pin configuration:

Pin 1: Output Q0 Pin 2: Output Q1 Pin 3: Output Q2 Pin 4: Output Q3 Pin 5: Output Q4 Pin 6: Output Q5 Pin 7: Output Q6 Pin 8: Output Q7 Pin 9: GND (Ground) Pin 10: Clock Input (CP) Pin 11: Data Input D0 Pin 12: Data Input D1 Pin 13: Data Input D2 Pin 14: Data Input D3 Pin 15: Data Input D4 Pin 16: Data Input D5 Pin 17: Data Input D6 Pin 18: Data Input D7 Pin 19: Output Enable (OE) Pin 20: VCC (Supply Voltage)

Functional Features

The 74VHC574N is a positive-edge triggered flip-flop with an 8-bit storage capacity. It can store and transfer data based on the clock input signal. The output enable pin allows for controlling the output state of the flip-flop.

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient data processing. - Low power consumption makes it suitable for portable devices. - Wide operating voltage range provides flexibility in various applications. - Compatibility with TTL and CMOS logic families simplifies integration into existing systems.

Disadvantages: - Limited storage capacity compared to larger flip-flops. - May require additional components for complex sequential logic operations.

Working Principles

The 74VHC574N operates based on positive-edge triggering. When a rising edge is detected on the clock input (CP), the data present at the input pins (D0-D7) is latched and stored in the corresponding output pins (Q0-Q7). The output enable (OE) pin controls whether the stored data is visible at the outputs or not.

Application Field Plans

The 74VHC574N finds applications in various digital systems, including: - Data registers: Used for temporary storage of data in microcontrollers and microprocessors. - Counters: Employed to count events or generate timing signals. - Shift registers: Utilized for serial-to-parallel or parallel-to-serial data conversion.

Alternative Models

For similar functionality, the following alternative models can be considered: - 74HC574: A compatible IC with a slightly different voltage range (2V to 6V). - SN74LS574: A TTL logic family flip-flop with comparable specifications. - CD4013: A CMOS dual D-type flip-flop with additional features.

In conclusion, the 74VHC574N is a versatile integrated circuit used for sequential logic operations. Its high-speed operation, low power consumption, and compatibility make it suitable for a wide range of digital electronic applications.

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