ON Semiconductor CAT1021LI-42 Supervisory Circuit

The ON Semiconductor CAT1021LI-42 is a highly reliable supervisory circuit designed to maintain system integrity by monitoring the power supply in microprocessor-based systems. It is a crucial component for applications that require precision and robustness in their power supply monitoring, such as computers, controllers, and intelligent instruments.

Key Features

• Power Supply Voltage Monitoring: The CAT1021LI-42 ensures that the system's power supply remains within acceptable thresholds. It is capable of monitoring a nominal threshold voltage of 4.2V, making it suitable for a variety of applications.
• Low Power Consumption: This device is designed to consume minimal power, which is critical for battery-operated devices where power efficiency is paramount.
• Manual Reset Input: It comes with a manual reset input that allows for a system reset to be triggered manually, providing an additional layer of control for system administrators and users.
• Reset Timeout Delay: The CAT1021LI-42 features a programmable reset timeout delay, which can be set by the user to ensure that the system has adequate time to stabilize before it becomes operational again after a reset event.
• Watchdog Timer: A built-in watchdog timer helps to prevent system failures by resetting the processor if the software fails to operate as expected. This feature is particularly useful in systems where continuous operation is critical.

Applications

The CAT1021LI-42 supervisory circuit is versatile and can be used in a wide range of applications, including:

• Microprocessor systems
• Microcontroller systems
• Intelligent instruments
• Industrial controls
• Portable battery-powered equipment

Product Specifications

The CAT1021LI-42 is available in a compact 8-lead PDIP or SOIC package, making it easy to integrate into a variety of designs. It operates over a wide temperature range, ensuring reliability and performance even under extreme conditions.

With its combination of features, the ON Semiconductor CAT1021LI-42 supervisory circuit is an excellent choice for designers looking to enhance the reliability and performance of their power-sensitive systems.