The 74HC123PW-Q100,118 is a dual retriggerable monostable multivibrator manufactured by Nexperia. This device is part of the 74HC family of high-speed CMOS logic devices and is qualified for automotive applications (AEC-Q100). It provides two independent monostable multivibrators, each capable of generating a precise output pulse of a predetermined duration when triggered.

Applications

• Pulse delay circuits
• Timer circuits
• Missing pulse detection
• Frequency division
• Automotive control systems

Features

• Dual Retriggerable Monostable Multivibrator
• High-Speed CMOS Logic
• AEC-Q100 Qualified for Automotive Applications
• Wide Operating Voltage Range (e.g., 2V to 6V)
• Schmitt-trigger Inputs for Noise Immunity

Benefits

• Precise pulse generation with external timing components
• High noise immunity for reliable operation in noisy environments
• Automotive qualification ensures robustness and reliability
• Versatile timing control for various applications
• Easy to interface with other logic devices

Additional Details

The output pulse width of the 74HC123PW-Q100,118 is determined by external timing components, typically a resistor and a capacitor. The retriggerable feature allows the output pulse to be extended if a trigger pulse is received before the original pulse duration has elapsed. The datasheet provides detailed timing diagrams, truth tables, and application notes for optimal usage. Consider the temperature range and supply voltage variations in the design to maintain stable performance.