Encyclopedia Entry: 74AHCT126D,112

Product Overview

Category

The 74AHCT126D,112 belongs to the category of integrated circuits (ICs). Specifically, it falls under the category of digital logic gates.

Use

This product is primarily used for signal amplification and switching in digital electronic circuits. It serves as a quad buffer/line driver with 3-state outputs.

Characteristics

• Quad buffer/line driver
• 3-state outputs
• High-speed operation
• Low power consumption
• Wide operating voltage range
• Schmitt-trigger action on all inputs

Package and Quantity

The 74AHCT126D,112 is available in a small-outline package (SO) with 14 pins. It is typically sold in reels or tubes containing multiple units.

Essence

The essence of the 74AHCT126D,112 lies in its ability to amplify and switch digital signals effectively, while offering high-speed operation and low power consumption.

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +125°C
• Maximum Quiescent Current: 8µA at 5.5V
• Maximum Propagation Delay: 9ns at 5.5V

Detailed Pin Configuration

The 74AHCT126D,112 has 14 pins, each serving a specific function:

1. 1A - Input 1 for buffer A
2. 1Y - Output 1 for buffer A
3. GND - Ground
4. 2Y - Output 2 for buffer B
5. 2A - Input 2 for buffer B
6. 3A - Input 3 for buffer C
7. 3Y - Output 3 for buffer C
8. VCC - Positive power supply
9. 4Y - Output 4 for buffer D
10. 4A - Input 4 for buffer D
11. OE - Output enable input (active low)
12. NC - No connection
13. GND - Ground
14. GND - Ground

Functional Features

The key functional features of the 74AHCT126D,112 include:

• Quad buffering capability
• 3-state outputs for high impedance state
• Schmitt-trigger action on all inputs for noise immunity
• Wide operating voltage range for compatibility with various systems

Advantages and Disadvantages

Advantages

• High-speed operation allows for efficient signal processing
• Low power consumption reduces energy requirements
• Schmitt-trigger action enhances noise immunity
• Wide operating voltage range ensures compatibility with different systems

Disadvantages

• Limited number of buffer/line driver channels (4 in this case)
• Not suitable for applications requiring a large number of outputs

Working Principles

The 74AHCT126D,112 operates based on the principles of digital logic gates. It takes input signals from the A, B, C, and D pins, amplifies them, and drives the corresponding outputs Y1, Y2, Y3, and Y4. The output enable (OE) pin controls the activation of the outputs. When OE is low, the outputs are enabled, and when it is high, the outputs enter a high impedance state.

Detailed Application Field Plans

The 74AHCT126D,112 finds application in various fields, including:

1. Microprocessor-based systems
2. Data communication systems
3. Industrial automation
4. Automotive electronics
5. Consumer electronics

In microprocessor-based systems, it can be used for address and data bus buffering. In data communication systems, it aids in signal amplification and line driving. In industrial automation, it facilitates control signal processing. In automotive electronics, it assists in signal conditioning and interfacing. In consumer electronics, it contributes to digital signal processing and switching.

Detailed Alternative Models

For those seeking alternative models with similar functionality, the following options are available:

1. 74HC126: This is a non-inverting buffer/line driver with 3-state outputs.
2. SN74LVC126A: A quad buffer/line driver with 3-state outputs, offering low voltage operation.
3. CD74HCT126E: Similar to the 74AHCT126D,112, this model provides quad buffering and 3-state outputs.

These alternative models can be considered based on specific requirements and compatibility with the target system.

In conclusion, the 74AHCT126D,112 is a versatile integrated circuit that serves as a quad buffer/line driver with 3-state outputs. Its high-speed operation, low power consumption, and wide operating voltage range make it suitable for various