onsemi

MM74HC123ASJ

MM74HC123ASJ Description

The MM74HC123ASJ is a monostable multivibrator IC from the 74HC series, manufactured by onsemi. This device is designed for surface-mount applications and features a 16SOP package. It operates within a supply voltage range of 2 V to 6 V and offers a propagation delay of 22 ns. The MM74HC123ASJ includes two independent monostable circuits, each equipped with Schmitt trigger inputs, ensuring reliable performance in noisy environments. The device is rated for an output current of 5.2 mA for both high and low states, making it suitable for driving various loads. The MM74HC123ASJ is REACH unaffected and classified under ECCN EAR99, with an HTSUS code of 8542.39.0001. It is packaged in a tube and has a moisture sensitivity level (MSL) of 1, indicating unlimited exposure to moisture.

MM74HC123ASJ Features

• Monostable Operation: The MM74HC123ASJ features two independent monostable circuits, providing flexibility in applications requiring multiple timing functions.
• Schmitt Trigger Inputs: The inclusion of Schmitt trigger inputs enhances noise immunity, making the device suitable for applications with noisy input signals.
• Wide Supply Voltage Range: With a supply voltage range of 2 V to 6 V, the MM74HC123ASJ can operate across a variety of power supply configurations.
• Low Propagation Delay: The 22 ns propagation delay ensures fast response times, critical for high-speed applications.
• High Output Current Capability: The device can source and sink up to 5.2 mA, making it capable of driving a range of loads.
• Surface Mount Compatibility: The 16SOP package is ideal for surface-mount technology (SMT), facilitating compact and efficient PCB designs.
• Moisture Sensitivity Level 1: The MSL rating of allows1 for unlimited exposure to moisture, reducing handling and storage concerns.

MM74HC123ASJ Applications

The MM74HC123ASJ is well-suited for a variety of applications that require precise timing and noise immunity. Some specific use cases include:

• Pulse Width Modulation (PWM): The monostable circuits can generate precise PWM signals for motor control and other applications.
• Signal Debouncing: The Schmitt trigger inputs are ideal for debouncing noisy switch inputs, ensuring clean digital signals.
• Timing Circuits: The device can be used in timing circuits forcontrollers micro and other digital systems, providing reliable timing functions.
• Signal Conditioning: The MM74HC123ASJ can be employed in signal conditioning circuits to generate clean pulses from noisy input signals.
• Communication Systems: The low propagation delay and high output current capability make it suitable for communication systems requiring fast and reliable signal processing.

Conclusion of MM74HC123ASJ

The MM74HC123ASJ from onsemi is a versatile monostable multivibrator IC that offers a combination of high performance and reliability. Its unique features, such Sch asmitt trigger inputs and low propagation delay, provide significant advantages over similar models. The wide supply voltage range and high output current capability make it suitable for a broad range of applications. While the product is now obsolete, it remains a valuable component for existing designs and legacy systems. For new designs, engineers may consider its successor or alternative models that build upon the MM74HC123ASJ's robust foundation.