Encyclopedia Entry: 74VHC123AMTCX

Product Overview

Category

The 74VHC123AMTCX belongs to the category of integrated circuits (ICs) and specifically falls under the family of VHC logic devices.

Use

This IC is commonly used in digital electronic circuits for various applications, including signal timing, pulse generation, and synchronization.

Characteristics

• High-speed operation: The 74VHC123AMTCX offers fast switching speeds, making it suitable for time-critical applications.
• Low power consumption: This IC is designed to operate efficiently with low power requirements.
• Wide operating voltage range: It can function within a broad voltage range, typically between 2.0V and 5.5V.
• Schmitt-trigger inputs: The device incorporates Schmitt-trigger inputs, ensuring reliable and noise-tolerant operation.
• Monostable multivibrator: The 74VHC123AMTCX is specifically designed as a monostable multivibrator, providing precise timing control.

Package and Quantity

The 74VHC123AMTCX is available in a small outline package (SOIC) with a total of 14 pins. It is typically sold in reels or tubes containing multiple units.

Specifications

• Supply Voltage Range: 2.0V 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: <10ns
• Trigger Pulse Width Range: 30ns to 1000ns

Pin Configuration

The 74VHC123AMTCX features 14 pins arranged as follows:

__ __ Q1 |1 U 14| VCC Q2 |2 13| Q0 CP |3 12| CLR GND |4 11| A D1 |5 10| B D2 |6 9| C R1 |7 8| R2 ¯¯ ¯¯

Functional Features

• Monostable Operation: The IC functions as a monostable multivibrator, generating a single output pulse of a specific duration upon receiving a trigger signal.
• Adjustable Pulse Width: The pulse width can be adjusted by selecting appropriate external timing components.
• Schmitt-trigger Inputs: The Schmitt-trigger inputs ensure noise immunity and reliable triggering even in the presence of signal fluctuations or noise.

Advantages

• High-speed operation enables precise timing control in time-critical applications.
• Low power consumption makes it suitable for battery-powered devices.
• Wide operating voltage range allows compatibility with various digital systems.
• Schmitt-trigger inputs provide noise tolerance and reliable operation.

Disadvantages

• Limited functionality: The 74VHC123AMTCX is specifically designed as a monostable multivibrator and may not be suitable for other complex logic operations.
• Availability: As technology advances, newer and more advanced alternatives may become more readily available.

Working Principles

The 74VHC123AMTCX operates based on the principles of monostable multivibrator circuits. When triggered, it generates a single output pulse with a duration determined by external timing components. The Schmitt-trigger inputs ensure reliable triggering and noise immunity.

Application Field Plans

The 74VHC123AMTCX finds application in various fields, including: - Timing circuits in microcontrollers and microprocessors - Pulse generation for communication protocols - Synchronization circuits in digital systems - Control circuitry in industrial automation

Alternative Models

Several alternative models with similar functionality are available in the market, including: - 74HC123: A non-Schmitt-trigger version of the IC. - CD74AC123: An advanced CMOS version with improved speed and power characteristics. - SN74LS123: A TTL logic equivalent with different voltage requirements.

These alternatives can be considered based on specific application requirements and availability.

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