Encyclopedia Entry: 74VHC126MTR

Product Overview

Category

The 74VHC126MTR belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in digital logic applications for signal buffering and level shifting.

Characteristics

• High-speed operation
• Low power consumption
• Wide operating voltage range
• Compatibility with various logic families
• Schmitt-trigger inputs for noise immunity

Package

The 74VHC126MTR is available in a small outline transistor (SOT) package.

Essence

This IC is an advanced high-speed CMOS buffer with 3-state outputs, designed to provide efficient signal amplification and level conversion.

Packaging/Quantity

The 74VHC126MTR is typically packaged in reels containing a specified quantity of units, such as 2500 pieces per reel.

Specifications

• Supply Voltage Range: 2.0V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 200MHz
• Propagation Delay Time: 4.5ns (typical)
• Output Current: ±8mA

Detailed Pin Configuration

The 74VHC126MTR has a total of 14 pins, which are assigned specific functions as follows:

1. Pin 1: 3-State Output Enable (OE)
2. Pin 2: Input A
3. Pin 3: Input B
4. Pin 4: GND (Ground)
5. Pin 5: Output Y1
6. Pin 6: Output Y2
7. Pin 7: VCC (Supply Voltage)
8. Pin 8: Output Y3
9. Pin 9: Output Y4
10. Pin 10: Input C
11. Pin 11: Input D
12. Pin 12: GND (Ground)
13. Pin 13: 3-State Output Enable (OE)
14. Pin 14: VCC (Supply Voltage)

Functional Features

• 3-state outputs allow for high impedance when disabled, enabling multiple devices to share a common bus.
• Schmitt-trigger inputs provide hysteresis and improve noise immunity.
• High-speed operation allows for efficient signal amplification and level shifting.
• Wide operating voltage range makes it compatible with various logic families.

Advantages and Disadvantages

Advantages

• High-speed operation enables fast data transmission.
• Low power consumption results in energy-efficient performance.
• Compatibility with different logic families provides flexibility in circuit design.
• Schmitt-trigger inputs enhance noise immunity, ensuring reliable signal processing.

Disadvantages

• Limited output current may restrict its use in certain applications requiring higher drive capabilities.
• Propagation delay time may affect timing-sensitive circuits.

Working Principles

The 74VHC126MTR operates based on complementary metal-oxide-semiconductor (CMOS) technology. It utilizes a combination of MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors) to amplify and buffer digital signals. The 3-state outputs allow the IC to control the flow of data on a shared bus, while the Schmitt-trigger inputs ensure stable and accurate signal detection.

Detailed Application Field Plans

The 74VHC126MTR finds application in various digital systems, including but not limited to: - Microcontrollers - Data communication interfaces - Memory modules - Industrial automation equipment - Automotive electronics

Detailed and Complete Alternative Models

1. SN74LVC126A: Similar functionality with lower power consumption.
2. MC74VHC126: Equivalent performance with different package options.
3. CD74HCT126: Compatible with higher voltage levels.

These alternative models offer similar features and can be used as substitutes for the 74VHC126MTR, depending on specific requirements and availability.

In conclusion, the 74VHC126MTR is a high-speed CMOS buffer IC widely used in digital logic applications. Its key features include efficient signal amplification, level shifting, and compatibility with various logic families. While it offers advantages such as high-speed operation and low power consumption, limitations like limited output current should be considered. The IC finds application in diverse fields, and alternative models provide flexibility in circuit design.