74HCT123PW,118 Dual Retriggerable Monostable Multivibrator – TSSOP-16

Description

The 74HCT123PW,118 is a high-speed, silicon-gate CMOS dual retriggerable monostable multivibrator. This device is designed to provide highly stable pulse generation, making it an essential component for timing-critical applications. Being “retriggerable” means that the output pulse can be extended by providing additional trigger signals before the current timing cycle completes.

Each of the two multivibrators features a dedicated trigger input (active HIGH and active LOW) and an overriding active LOW reset input. This flexibility allows for precise control over pulse initiation, termination, and duration. It is widely used for creating adjustable time delays, pulse shaping, and watchdog timer circuits in digital systems.

Note: Product images are for illustrative purposes only. Because this device relies on external resistors and capacitors (RC network) to determine pulse width, please refer to the official datasheet for the timing equations and recommended component values required to achieve your desired duration.

Features

• Dual Functionality: Two independent monostable circuits integrated into a single 16-pin package.
• Retriggerable: Supports pulse extension via subsequent trigger inputs during an active timing cycle.
• Overriding Reset: Features an active LOW reset input that immediately terminates the output pulse.
• Precision Timing: High-performance CMOS architecture for stable and repeatable pulse generation.
• Flexible Triggering: Provides both rising-edge and falling-edge trigger inputs for versatile circuit integration.
• Package: Compact TSSOP-16 surface-mount (SMD) package.

Benefits

• Design Versatility: Independent control of two timing channels allows for complex sequencing logic.
• Robustness: Wide operating temperature range (-40°C to +125°C) ensures reliability in industrial and automotive environments.
• Ease of Integration: TTL-compatible inputs allow for seamless operation with mixed-signal logic circuits.

Applications

• Pulse Width Modulation (PWM): Generating specific time delays or pulse durations.
• Watchdog Timers: Resetting system logic if a periodic signal is missed.
• Signal Conditioning: Debouncing switches or cleaning up noisy pulse trains.
• Sequential Timing: Cascading pulses to create complex timed events in automated systems.

Package Includes

• 1 x 74HCT123PW,118 Dual Retriggerable Monostable Multivibrator IC (TSSOP-16)

Specifications