74HC123D,653 Dual Retriggerable Monostable Multivibrator | High-Speed CMOS | SOIC-16 SMD

Description

The 74HC123D,653 is a high-speed, silicon-gate CMOS Dual Retriggerable Monostable Multivibrator. It contains two independent multivibrator circuits, each providing stable output pulse generation. These devices are “retriggerable,” meaning a new trigger pulse applied during the timing period will extend the output pulse duration. Each circuit features three trigger inputs: two active-LOW (A-bar) and one active-HIGH (B).

The pulse width is determined by an external resistor ($R_{ext}$) and capacitor ($C_{ext}$). This IC is ideal for precision pulse generation, pulse shaping, and time-delay applications, providing a clean, stable output pulse regardless of the trigger signal’s duration or quality.

Note: Product images are shown for reference only. The actual product may vary in appearance, manufacturer marking, or logo depending on stock availability.

Features

• Dual independent monostable multivibrators
• Retriggerable: output pulse duration can be extended by successive trigger inputs
• Three trigger inputs per channel (two active-LOW, one active-HIGH)
• High-speed CMOS (HC) technology
• Wide operating voltage range (2V to 6V)
• Reset functionality to terminate output pulse immediately
• Compact SOIC-16 SMD package

Benefits

• Precise control over output pulse duration via external RC components
• Stable signal generation suitable for critical timing applications
• Multiple trigger inputs provide logic flexibility for complex control scenarios
• Integrated reset capability enhances system safety and control

Applications

• Precision Pulse Generation
• Pulse Width Modulation (PWM) and Shaping
• Time-Delay Circuitry
• Watchdog Timer Circuits
• Missing Pulse Detection

Package Includes

• 1 x 74HC123D,653 Dual Retriggerable Monostable Multivibrator IC (SOIC-16 SMD)

Specifications