ON Semiconductor MC34164D-3R2G Microprocessor Supervisory Circuit

The ON Semiconductor MC34164D-3R2G is a precision microprocessor supervisory circuit designed to monitor the power supplies in microprocessor and digital systems. It provides a reliable solution for systems that require a reset signal when a power failure or brownout condition occurs. This versatile component is essential for maintaining the integrity of the system's operation and preventing data corruption during adverse power conditions.

Key Features:

• Voltage Threshold: The MC34164D-3R2G has a preset threshold voltage of 3.2V, which is ideal for 3.3V powered circuits. When the supply voltage falls below this threshold, the device generates a reset signal to the microprocessor.
• Reset Time Delay: It includes a built-in delay to ensure the reset output remains active for an adequate period after the voltage drops below the threshold, allowing the system to stabilize during power-up or recovery from a brownout.
• Low Power Consumption: This device is designed for low power consumption, making it suitable for battery-operated and power-sensitive applications.
• Open Drain Reset Output: The reset output is an open-drain configuration, which allows for the flexibility to connect to different logic levels and interface with other components within the system.
• Compact Package: The MC34164D-3R2G comes in a small SOIC-8 package, making it easy to incorporate into space-constrained designs.

Applications:

The MC34164D-3R2G is widely used in various applications where reliable monitoring of the power supply voltage is critical. Some common applications include:

• Microprocessor-based systems
• Portable/battery-powered equipment
• Computers and computer peripherals
• Intelligent instruments
• Automotive systems

This supervisory circuit from ON Semiconductor is a robust solution for designers looking to enhance the reliability and stability of their digital and microprocessor-based systems. The MC34164D-3R2G's ability to provide a consistent reset signal during power fluctuations is invaluable for maintaining system integrity and preventing data loss or corruption.