74HC125D

Product Overview

Category

The 74HC125D belongs to the category of integrated circuits (ICs) and specifically falls under the family of logic gates.

Use

This IC is primarily used for signal buffering and level shifting applications in digital electronic circuits.

Characteristics

• High-speed operation: The 74HC125D operates at high speeds, making it suitable for use in time-critical applications.
• Wide voltage range: It can operate within a wide voltage range, typically between 2V and 6V.
• Low power consumption: The IC consumes low power, making it energy-efficient.
• High noise immunity: It has excellent noise immunity, ensuring reliable signal transmission even in noisy environments.

Package

The 74HC125D is available in a standard 14-pin dual in-line package (DIP), which is a common packaging format for ICs.

Essence

The essence of the 74HC125D lies in its ability to buffer and shift digital signals, ensuring proper signal integrity and compatibility between different circuit sections.

Packaging/Quantity

The 74HC125D is commonly sold in reels or tubes containing multiple units. The exact quantity may vary depending on the supplier.

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage Range: 0V to Vcc
• Output Voltage Range: 0V to Vcc
• Maximum Operating Frequency: 50 MHz
• Maximum Propagation Delay: 15 ns
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The 74HC125D has a total of 14 pins, each serving a specific purpose. Here is the detailed pin configuration:

1. OE (Output Enable) 1
2. Y1 (Output) 1
3. A1 (Input) 1
4. B1 (Input) 1
5. GND (Ground)
6. B2 (Input) 2
7. A2 (Input) 2
8. Y2 (Output) 2
9. OE (Output Enable) 2
10. Vcc (Supply Voltage)
11. Y3 (Output) 3
12. A3 (Input) 3
13. B3 (Input) 3
14. GND (Ground)

Functional Features

The 74HC125D offers the following functional features:

• Quad buffer gates: It consists of four independent buffer gates, each capable of buffering a single digital signal.
• Output enable control: The output enable (OE) pins allow for individual control of each buffer gate, enabling selective signal transmission.
• High-speed operation: The IC can handle high-frequency signals with minimal propagation delay.

Advantages and Disadvantages

Advantages

• High-speed operation allows for efficient signal buffering in time-critical applications.
• Wide voltage range compatibility makes it suitable for various circuit designs.
• Low power consumption contributes to energy efficiency.
• Excellent noise immunity ensures reliable signal transmission.

Disadvantages

• Limited number of buffer gates per IC may require multiple units for complex circuit designs.
• Not suitable for applications requiring higher operating frequencies beyond its specified maximum frequency.

Working Principles

The 74HC125D operates based on the principles of digital logic. It uses CMOS technology to buffer and shift digital signals. When the output enable (OE) pin is enabled, the input signals are buffered and transmitted to the corresponding output pins. The IC ensures proper signal integrity by maintaining voltage levels and providing isolation between different sections of a digital circuit.

Detailed Application Field Plans

The 74HC125D finds application in various fields, including:

1. Microcontroller interfacing: It can be used to interface microcontrollers with other digital devices, ensuring proper signal compatibility.
2. Level shifting: The IC enables voltage level shifting between different logic families, allowing seamless communication between incompatible devices.
3. Signal buffering: It is commonly used to buffer digital signals in applications where signal integrity and noise immunity are critical, such as data transmission systems.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the 74HC125D include:

1. SN74HC125N: This IC from Texas Instruments offers quad buffer gates with similar specifications and pin configuration.
2. CD74HC125E: Manufactured by Texas Instruments, this IC provides four independent buffer gates with comparable characteristics.
3. MC74HC125AN: This alternative model from ON Semiconductor offers quad buffer gates with similar performance and pinout.

These alternative models can be considered based on specific requirements and availability.

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