Encyclopedia Entry: 74AHC123ABQ-Q100X

Product Overview

Category

The 74AHC123ABQ-Q100X belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in digital electronics for various applications such as timing, pulse generation, and synchronization.

Characteristics

• High-speed operation
• Low power consumption
• Wide operating voltage range
• Schmitt-trigger inputs for noise immunity
• Monostable multivibrator functionality

Package

The 74AHC123ABQ-Q100X is available in a small-outline package (SOIC) with 16 pins.

Essence

The essence of this product lies in its ability to provide precise timing and pulse generation capabilities in digital circuits.

Packaging/Quantity

The 74AHC123ABQ-Q100X is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Supply Voltage Range: 2 V to 5.5 V
• Operating Temperature Range: -40°C to +125°C
• Propagation Delay: 8 ns (typical)
• Output Current: ±8 mA
• Input Capacitance: 3.5 pF (typical)

Detailed Pin Configuration

The 74AHC123ABQ-Q100X has 16 pins arranged as follows:

___________ | | Q1 --|1 16|-- VCC Q2 --|2 15|-- CLR GND --|3 14|-- A RC --|4 13|-- B RB --|5 12|-- C RA --|6 11|-- D CT --|7 10|-- Q RES --|8 9|-- Q' |___________|

Functional Features

• Monostable multivibrator operation
• Trigger inputs with Schmitt-trigger characteristics for noise immunity
• Output pulse width determined by external timing components
• Clear input for immediate termination of the output pulse
• Direct reset input for retriggering the monostable multivibrator

Advantages and Disadvantages

Advantages

• High-speed operation allows for precise timing applications
• Low power consumption makes it suitable for battery-powered devices
• Wide operating voltage range provides flexibility in various digital circuits
• Schmitt-trigger inputs enhance noise immunity, ensuring reliable operation

Disadvantages

• Limited output current may restrict its use in certain high-current applications
• Input capacitance can affect signal integrity in high-frequency designs

Working Principles

The 74AHC123ABQ-Q100X operates as a monostable multivibrator. It generates a single output pulse of a duration determined by external timing components connected to the RC (Resistor-Capacitor) network. The trigger inputs (A and B) are equipped with Schmitt-trigger characteristics, which ensure noise immunity and stable operation. The output pulse can be terminated immediately using the CLR (Clear) input or retriggered using the RES (Reset) input.

Detailed Application Field Plans

The 74AHC123ABQ-Q100X finds applications in various fields, including:

1. Timing circuits: Used to generate precise time delays in microcontrollers, communication systems, and industrial automation.
2. Pulse generation: Employed in digital systems for generating accurate pulses required for data transmission, clock synchronization, and control signals.
3. Synchronization: Utilized in digital circuits to synchronize different components or subsystems, ensuring proper coordination and timing accuracy.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the 74AHC123ABQ-Q100X include:

1. 74HC123: A non-automotive version of the IC with similar characteristics and pin configuration.
2. CD74AC123: Another monostable multivibrator IC with comparable specifications and features.

These alternative models can be considered based on specific application requirements, availability, and cost considerations.

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