Encyclopedia Entry: 74VHCT08ASJX

Product Overview

Category

The 74VHCT08ASJX belongs to the category of integrated circuits (ICs), specifically logic gates.

Use

This IC is commonly used in digital electronics for logical operations, specifically as a quad 2-input AND gate.

Characteristics

• High-speed operation: The 74VHCT08ASJX operates at high speeds, making it suitable for applications requiring quick response times.
• Low power consumption: This IC is designed to consume low power, making it energy-efficient.
• Wide operating voltage range: It can operate within a wide voltage range, typically between 2V and 5.5V.
• Schmitt-trigger inputs: The inputs of this IC are equipped with Schmitt-trigger circuitry, allowing for noise immunity and improved signal integrity.
• Compact package: The 74VHCT08ASJX is available in a small surface mount package, making it suitable for space-constrained applications.

Package and Quantity

The 74VHCT08ASJX is typically packaged in a small outline integrated circuit (SOIC) package. It is available in tape and reel packaging, with a standard quantity of 2500 units per reel.

Specifications

• Supply Voltage Range: 2V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 6 ns (max)
• Quiescent Current: 1 μA (typ)

Pin Configuration

The 74VHCT08ASJX has a total of 14 pins, which are assigned specific functions as follows:

+---+--+---+ A1 --|1 +--+ 14|-- VCC B1 --|2 13|-- A4 Y1 --|3 12|-- B4 A2 --|4 11|-- Y4 B2 --|5 74VHCT08ASJX 10-- B3 Y2 --|6 9-- A3 GND --|7 8-- Y3 +---+--+---+

Functional Features

• Quad 2-input AND gate: The 74VHCT08ASJX consists of four independent 2-input AND gates, allowing for multiple logical operations within a single IC.
• High-speed operation: With a propagation delay time of only 6 ns, this IC enables rapid signal processing.
• Schmitt-trigger inputs: The Schmitt-trigger circuitry ensures reliable and noise-immune input signal detection.

Advantages and Disadvantages

Advantages

• High-speed operation allows for quick response times in digital circuits.
• Low power consumption makes it energy-efficient.
• Wide operating voltage range provides flexibility in various applications.
• Schmitt-trigger inputs enhance noise immunity and signal integrity.

Disadvantages

• Limited to 2-input AND gate functionality, limiting its application scope to specific logical operations.

Working Principles

The 74VHCT08ASJX operates based on the principles of digital logic. It performs the logical AND operation on two input signals, producing an output signal that is high (logic level 1) only when both inputs are high. Otherwise, the output remains low (logic level 0).

Application Field Plans

The 74VHCT08ASJX finds extensive use in various digital electronic systems, including but not limited to: - Microcontrollers and microprocessors - Communication systems - Industrial automation - Consumer electronics - Automotive electronics

Alternative Models

For similar functionality and compatibility, alternative models to the 74VHCT08ASJX include: - 74HC08: A standard CMOS version of the quad 2-input AND gate. - SN74LS08: A TTL (transistor-transistor logic) version of the quad 2-input AND gate.

These alternatives offer similar logical operations but may differ in terms of voltage levels, power consumption, and speed characteristics.

In conclusion, the 74VHCT08ASJX is a high-speed, low-power quad 2-input AND gate IC that finds application in various digital electronic systems. Its compact package, wide operating voltage range, and Schmitt-trigger inputs make it a versatile choice for designers seeking efficient logical operations.