ON Semiconductor 74VHC123ASJ Dual Retriggerable Monostable Multivibrator

The 74VHC123ASJ is a high-performance CMOS product from ON Semiconductor, designed to offer robust solutions for digital logic systems. This integrated circuit is a dual retriggerable monostable multivibrator that is capable of generating precise time delays or timing pulses. With two independent multivibrators in one package, it is a versatile choice for a wide range of applications in consumer electronics, automation, and industrial control systems.

Each multivibrator of the 74VHC123ASJ has an active LOW trigger input (A), an active HIGH trigger input (B), a clear input (CLR), an output (Q), and a complementary output (Q̅). The active trigger inputs allow the device to be triggered on the leading edge of the input pulse, providing flexibility in control and synchronization. The clear input can be used to reset the multivibrator, ensuring that the output returns to its default state immediately.

The timing period for each multivibrator can be controlled by an external resistor and capacitor, with the external capacitor determining the pulse width. The 74VHC123ASJ can also be retriggered by applying a pulse to either the A or B inputs during the timing cycle, which will restart the timing interval. This retriggerable feature makes it suitable for applications that require precise pulse generation and timing adjustments.

Manufactured with advanced silicon-gate CMOS technology, the 74VHC123ASJ provides low power dissipation yet high speed. It has a typical propagation delay time of 8ns, ensuring fast response times for critical applications. The device is also characterized for operation from -40°C to +85°C, making it reliable in a wide range of environmental conditions.

ON Semiconductor's 74VHC123ASJ comes in a standard 16-pin SJ package, which is compatible with industry-standard footprints. It is also lead-free and RoHS compliant, aligning with environmental standards and regulations. With its robust design and versatile features, the 74VHC123ASJ is an excellent choice for designers looking to implement reliable timing solutions in their digital logic designs.