Encyclopedia Entry: 74VHCT74M

Product Overview

Category

The 74VHCT74M belongs to the category of integrated circuits (ICs), specifically a flip-flop IC.

Use

This IC is commonly used in digital electronics for storing and manipulating binary data. It serves as a basic building block for sequential logic circuits.

Characteristics

• High-speed operation: The 74VHCT74M is designed for high-speed applications, allowing for efficient data storage and manipulation.
• Low power consumption: This IC is optimized for low power consumption, making it suitable for battery-powered devices.
• Compatibility: It is compatible with both TTL (Transistor-Transistor Logic) and CMOS (Complementary Metal-Oxide-Semiconductor) logic families.
• Wide operating voltage range: The 74VHCT74M can operate within a wide voltage range, typically between 2V and 5.5V.

Package

The 74VHCT74M is available in a standard dual-in-line package (DIP) with 14 pins. The package provides easy integration into circuit boards and facilitates soldering.

Essence

The essence of the 74VHCT74M lies in its ability to store and manipulate binary data using flip-flop circuits. It enables sequential logic operations in digital systems.

Packaging/Quantity

The 74VHCT74M is commonly sold in reels or tubes containing multiple units. The exact quantity may vary depending on the supplier, but a typical reel contains 250 units.

Specifications

• Supply Voltage Range: 2V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Input Voltage High Level (VIH): 0.7 x VCC to VCC + 0.3V
• Input Voltage Low Level (VIL): -0.3V to 0.3 x VCC
• Output Voltage High Level (VOH): 2.4V (min) at IOH = -4mA
• Output Voltage Low Level (VOL): 0.4V (max) at IOL = 4mA

Detailed Pin Configuration

The 74VHCT74M has a total of 14 pins, each serving a specific function:

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 (Positive Power Supply)
9. D (Data Input)
10. CLK (Clock Input)
11. GND (Ground)
12. Q (Output)
13. Q̅ (Complementary Output)
14. PRE (Preset Input)

Functional Features

The 74VHCT74M offers the following functional features:

• Data storage: It can store a single bit of binary data using its flip-flop circuitry.
• Clock-triggered operation: The stored data can be updated based on the rising or falling edge of the clock signal.
• Asynchronous preset and clear inputs: The IC allows for immediate setting or resetting of the stored data independent of the clock signal.

Advantages and Disadvantages

Advantages

• High-speed operation enables efficient data manipulation.
• Low power consumption makes it suitable for battery-powered devices.
• Compatibility with TTL and CMOS logic families allows for easy integration into existing systems.
• Wide operating voltage range provides flexibility in various applications.

Disadvantages

• Limited storage capacity: The 74VHCT74M can only store a single bit of data.
• Lack of built-in protection features: It may require additional circuitry to protect against voltage spikes or other external disturbances.

Working Principles

The 74VHCT74M operates based on the principles of flip-flop circuits. It utilizes positive-edge-triggered D-type flip-flops to store and manipulate binary data. The clock signal controls the timing of data updates, while the preset and clear inputs allow for immediate changes to the stored data.

Detailed Application Field Plans

The 74VHCT74M finds applications in various digital systems, including but not limited to:

1. Microcontrollers: Used for storing temporary data or status flags.
2. Communication devices: Employed in data transmission and reception circuits.
3. Memory modules: Integrated into memory addressing and control circuits.
4. Counters and timers: Utilized for sequential counting and timekeeping operations.
5. Data storage systems: Incorporated in registers and shift registers.

Detailed and Complete Alternative Models

There are several alternative models available that offer similar functionality to the 74VHCT74M. Some notable alternatives include:

• SN74HC74: A high-speed CMOS dual D-type flip-flop IC.