The HD74HC123AP is a high-speed silicon gate CMOS dual retriggerable monostable multivibrator with clear. Manufactured by Renesas Electronics America, this device provides two independent monostable multivibrators, each triggered by either a positive or negative going edge. The device is retriggerable, meaning that if an input trigger occurs while the output is active, the output pulse is extended. The clear input allows for asynchronous clearing of the output pulse.

Applications

• Timers
• Pulse generators
• Missing pulse detectors
• Frequency dividers
• Delay circuits

Features

• High-speed operation
• Retriggerable capability
• Clear input for asynchronous clearing
• Triggering from positive or negative going edge
• Wide operating voltage range
• Low power dissipation

Benefits

• Versatile timing and pulse generation capabilities.
• Ability to extend output pulse width with retriggering.
• Precise control over pulse duration.
• Simplified system design with dual multivibrators in a single package.
• Energy efficiency due to low power consumption.

Additional Details

The output pulse width is determined by the external timing components Rx and Cx. The HD74HC123AP is available in a 16-pin DIP package. The device operates from a supply voltage of 2V to 6V and features high noise immunity. It is suitable for a wide range of timing and pulse generation applications requiring precise and reliable performance. The pulse width can be calculated approximately using the formula: Pulse Width ≈ Rx * Cx.