onsemi

74VHC123ASJ

74VHC123ASJ Description

The 74VHC123ASJ is a monostable multivibrator IC designed for high-speed, low-power applications. Manufactured by onsemi, this device is part of the 74VHC series, known for its robust performance and reliability. The 74VHC123ASJ features a propagation delay of 8.1 ns, making it suitable for applications requiring rapid signal processing. It operates within a supply voltage range of 2 V to 5.5 V and provides an output current of 8 mA for both high and low states. The IC includes Schmitt trigger inputs, which enhance noise immunity and ensure stable operation in noisy environments. The 74VHC123ASJ is packaged in a tube and is classified under HTSUS code 8542.39.0001. It has a moisture sensitivity level (MSL) of 1, indicating it is unaffected by moisture and can be stored without special handling. Despite being marked as obsolete, the 74VHC123JAS remains a viable option for legacy systems and specific applications where its unique features are advantageous.

74VHC123ASJ Features

• Monostable Operation: The 74VHC123ASJ is designed to generate a single output pulse in response to an input trigger, making it ideal for timing and synchronization tasks.
• Low Propagation Delay: With a propagation delay of 8.1 ns, this IC ensures minimal latency in signal transmission, crucial for high-speed digital circuits.
• Schmitt Trigger Inputs: The inclusion of Schmitt trigger inputs provides hysteresis, enhancing noise immunity and ensuring stable operation even in noisy environments.
• Wide Supply Voltage Range: The 74VHC123ASJ operates within a supply voltage range of 2 V to 5.5 V, offering flexibility in power supply requirements.
• High Output Current: The IC delivers an output current of 8 mA for both high and low states, supporting robust signal drive capabilities.
• Surface Mount Packaging: The surface mount package type facilitates easy integration into modern PCB designs, optimizing space and reducing assembly complexity.
• Moisture Sensitivity Level 1: The MSL rating of 1 indicates that the 74VHC123ASJ is unaffected by moisture, ensuring reliability in various environmental conditions.
• REACH Compliance: The 74VHC123ASJ is REACH unaffected, ensuring compliance with environmental and safety regulations.

74VHC123ASJ Applications

The 74VHC123ASJ is well-suited for a variety of applications where precise timing and stable operation are critical. Some specific use cases include:

• Timing Circuits: Ideal for generating precise timing pulses in digital systems, such as clock generation and synchronization.
• Noise Filtering: The Schmitt trigger inputs make it suitable for applications where input signals may be noisy, ensuring clean and stable output pulses.
• Pulse Generation: Useful in applications requiring the generation of single or multiple pulses, such as in communication systems and digital signal processing.
• Legacy Systems: Despite being marked as obsolete, the 74VHC123ASJ remains a reliable choice for maintaining and upgrading legacy systems that rely on its specific features and performance characteristics.

Conclusion of 74VHC123ASJ

The 74VHC123ASJ is a versatile monostable multivibrator IC that offers a combination of high-speed performance, low power consumption, and robust noise immunity. Its wide supply voltage range, high output current, and surface mount packaging make it suitable for a variety of modern and legacy applications. While marked as obsolete, the 74VHC123ASJ continues to provide reliable performance and remains a valuable component for specific use cases where its unique features are essential.