Encyclopedia Entry: 74VHCT126AFT

Product Overview

Category

The 74VHCT126AFT belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in digital electronics for signal buffering and line driving applications.

Characteristics

• High-speed operation
• Low power consumption
• Compatibility with both TTL and CMOS logic levels
• Wide operating voltage range
• Schmitt-trigger inputs for noise immunity

Package

The 74VHCT126AFT is available in a small outline integrated circuit (SOIC) package.

Essence

The essence of this product lies in its ability to provide reliable signal buffering and line driving capabilities in various digital electronic systems.

Packaging/Quantity

The 74VHCT126AFT is typically packaged in reels or tubes, containing a quantity of 250 or 300 units per package.

Specifications

• Supply Voltage Range: 2.0V to 5.5V
• Input Voltage Range: -0.5V to VCC + 0.5V
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 4.5ns (typical)
• Output Current: ±8mA

Detailed Pin Configuration

The 74VHCT126AFT has a total of 14 pins, which are assigned specific functions as follows:

1. Pin 1: Input Enable (OE)
2. Pin 2: Input A
3. Pin 3: Output Y
4. Pin 4: Ground (GND)
5. Pin 5: Output Y
6. Pin 6: Input B
7. Pin 7: Output Y
8. Pin 8: Power Supply (VCC)
9. Pin 9: Output Y
10. Pin 10: Input C
11. Pin 11: Output Y
12. Pin 12: Input D
13. Pin 13: Output Y
14. Pin 14: Output Y

Functional Features

• Quad 3-state non-inverting buffer
• High-speed operation allows for efficient signal transmission
• Schmitt-trigger inputs provide noise immunity and enhanced signal integrity
• Wide operating voltage range enables compatibility with various logic levels
• Low power consumption makes it suitable for battery-powered applications

Advantages and Disadvantages

Advantages

• Versatile IC suitable for a wide range of digital electronic applications
• Compatibility with both TTL and CMOS logic levels simplifies integration into existing systems
• High-speed operation ensures efficient signal buffering and line driving capabilities
• Schmitt-trigger inputs enhance noise immunity, improving overall system reliability

Disadvantages

• Limited output current may restrict its use in certain high-current applications
• Availability in only one package type (SOIC) may limit flexibility in certain designs

Working Principles

The 74VHCT126AFT operates as a quad 3-state non-inverting buffer. It receives input signals from the A, B, C, and D pins and provides buffered outputs on the corresponding Y pins. The OE pin controls the enable/disable function of the buffer. When the OE pin is low, the outputs are enabled and reflect the input signals. Conversely, when the OE pin is high, the outputs are disabled and enter a high-impedance state.

Detailed Application Field Plans

The 74VHCT126AFT finds extensive application in various digital electronic systems, including but not limited to: - Microcontrollers and microprocessors - Data communication systems - Memory interfaces - Industrial automation equipment - Automotive electronics - Consumer electronics

Detailed and Complete Alternative Models

• 74HC126: Similar functionality, but operates at a higher voltage range (2.0V to 6.0V)
• SN74LS126: TTL logic level compatible alternative with similar characteristics
• CD40106: CMOS hex Schmitt-trigger inverter, suitable for signal buffering applications

These alternative models offer similar functionality and can be considered as substitutes for the 74VHCT126AFT based on specific design requirements.

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