74HC123PW,112

Product Overview

• Category: Integrated Circuit (IC)
• Use: Multivibrator and Timer
• Characteristics: High-speed operation, low power consumption
• Package: TSSOP-16
• Essence: Dual retriggerable monostable multivibrator
• Packaging/Quantity: Tape and reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 2 V to 6 V
• Operating Temperature Range: -40°C to +125°C
• Output Current: ±5.2 mA
• Propagation Delay: 20 ns
• Trigger Pulse Width: 30 ns to 1000 ns

Pin Configuration

The 74HC123PW,112 has a TSSOP-16 package with the following pin configuration:

__ __ 1 |1 \__/ 16| VCC 2 |2 15| RESET 3 |3 14| Qn 4 |4 13| Q 5 |5 12| GND 6 |6 11| TRIGGER 7 |7 10| RELOAD 8 |8 9| CONTROL ----------

Functional Features

• Retriggerable operation allows for extending the output pulse width
• Monostable mode provides a stable output pulse width regardless of trigger input changes
• Schmitt-trigger inputs ensure noise immunity and hysteresis
• Wide supply voltage range enables compatibility with various systems

Advantages and Disadvantages

Advantages: - High-speed operation suitable for time-critical applications - Low power consumption for energy-efficient designs - Retriggerable functionality offers flexibility in pulse width control

Disadvantages: - Limited output current may restrict use in certain applications - Narrow trigger pulse width range may not meet specific requirements

Working Principles

The 74HC123PW,112 is a dual retriggerable monostable multivibrator. It can operate in either monostable or astable mode. In monostable mode, the IC generates a single output pulse of a fixed duration when triggered. The pulse width can be extended by applying additional trigger pulses before the end of the output pulse.

In astable mode, the IC continuously generates a train of output pulses with a fixed frequency and duty cycle. The frequency and duty cycle can be adjusted by controlling the values of external timing components.

Detailed Application Field Plans

The 74HC123PW,112 finds applications in various fields, including:

1. Timing circuits: Used as timers in applications requiring precise control over pulse width and frequency.
2. Communication systems: Employed for generating synchronization signals and time delays.
3. Industrial automation: Integrated into control systems to provide accurate timing for processes and operations.
4. Automotive electronics: Utilized in automotive control modules for timing-related functions.
5. Consumer electronics: Incorporated in devices such as remote controls, timers, and clocks.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the 74HC123PW,112 are:

1. CD74HC123E: Dual retriggerable monostable multivibrator in a DIP-16 package.
2. SN74HC123N: Dual retriggerable monostable multivibrator in a PDIP-16 package.
3. MC74HC123AN: Dual retriggerable monostable multivibrator in a PDIP-16 package.

These alternatives can be considered based on specific requirements, package preferences, and availability.

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