ON Semiconductor MC34164D-5R2G Microprocessor Supervisory Circuit

The MC34164D-5R2G by ON Semiconductor is a precision microprocessor supervisory circuit designed to monitor the power supplies in microprocessor and digital systems. It provides a crucial function by asserting a reset signal whenever the V<sub>CC supply voltage declines below a preset threshold, ensuring the proper operation of the system during power-up, power-down, and brown-out conditions.

This device is equipped with a 5.0V threshold, tailored for systems that operate at standard logic levels, making it an ideal choice for safeguarding 5V powered microprocessors and other digital systems against the consequences of unpredictable power supply fluctuations.

Key Features:

• Reset Threshold Voltage: Precisely set at 5.0V, suitable for 5V logic circuits.
• Reset Output: The active-low, open-drain reset output ensures compatibility with a variety of microprocessors and other digital ICs.
• Low Supply Current: With its low operating current, this device is an energy-efficient solution for power-critical designs.
• Temperature Performance: Guaranteed to perform over the industrial temperature range, making it reliable in diverse operating environments.
• Package: Offered in an SOIC-8 package, it provides a compact footprint for space-constrained applications.
• Glitch Immunity: Ensures stable operation by ignoring voltage transients on V<sub>CC, preventing false resets.

The MC34164D-5R2G is characterized for operation from -40°C to +85°C, ensuring reliability across a wide range of industrial applications. Its quick reaction to power faults protects processors and systems by resetting them into a known safe state, thus preventing software corruption and data loss.

Integrating the MC34164D-5R2G into your design can significantly enhance system reliability and provide peace of mind that your digital system will operate as intended, even in the face of unpredictable power supply conditions. Whether you're designing consumer electronics, automotive systems, or complex industrial equipment, the MC34164D-5R2G from ON Semiconductor is a smart choice for managing your system's power integrity.