ON Semiconductor MC34164D-5G Microprocessor Reset Circuit

The ON Semiconductor MC34164D-5G is a precision microprocessor reset circuit device designed to monitor the supply voltage of microprocessors (µP) and digital systems. It provides a reliable method to ensure that a proper power-up and power-down sequence is followed, protecting the system from erratic behavior due to unpredictable power levels.

This reset circuit is particularly well-suited for battery-powered equipment, with a low power consumption that extends the life of the battery. The MC34164D-5G has a threshold voltage of 4.63V, which means it will trigger a reset signal whenever the supply voltage falls below this value, ensuring that the microprocessor and other sensitive components are safeguarded against low voltage conditions.

The device is packaged in a compact SOIC-8 package, making it easy to integrate into a variety of designs without taking up significant board space. It is characterized for operation over a temperature range of -40°C to +85°C, which allows for use in environments with wide temperature variations.

Key features of the MC34164D-5G include:

• Precision Voltage Monitoring: The circuit monitors the supply voltage and triggers a reset if it drops below the precise threshold, ensuring reliable operation.
• Low Power Consumption: Ideal for battery-operated devices, it has minimal impact on the overall power draw of the system.
• Active Low Reset: The reset output is active low, which is a common configuration compatible with many microprocessors and digital ICs.
• Guaranteed Reset Valid to Vcc = 1V: Ensures that the reset signal is valid even at very low voltage levels.
• Compact Packaging: The SOIC-8 package is suitable for space-constrained applications.

Overall, the ON Semiconductor MC34164D-5G is an essential component for any system that requires a reliable and precise method of monitoring power supply levels. It provides an additional layer of protection for microprocessors, helping to prevent data corruption and hardware damage due to insufficient power supply or brown-out conditions.