Maxim Integrated MAX6864UK31D1S+T Microprocessor Reset Circuit

The Maxim Integrated MAX6864UK31D1S+T is a highly-reliable microprocessor (µP) supervisory circuit designed to monitor power supplies in digital systems. It provides a significant layer of protection by ensuring that the µP boots up in a known state every time. This device is particularly useful in situations where the system requires an active-low reset signal when the supply voltage drops below a predetermined threshold.

The MAX6864UK31D1S+T comes in a small, surface-mount SOT-23 package, which makes it an ideal choice for space-constrained applications. It operates over a wide voltage range and features a factory-trimmed reset threshold voltage of 3.1V, tailored to monitor 3.3V power supplies. The reset output remains asserted for a minimum reset timeout period of 140ms after the supply voltage rises above the reset threshold, ensuring a proper system reset.

This device is characterized for operation over the extended industrial temperature range, making it suitable for a variety of challenging environments. It is designed with a low supply current of 6µA (typical), which is beneficial for battery-powered applications where power efficiency is critical.

Key features of the MAX6864UK31D1S+T include:

• Factory-set reset threshold voltage of 3.1V, suitable for 3.3V-powered systems
• Low 6µA supply current, ideal for power-sensitive applications
• Guaranteed reset valid to VCC = 1V, ensuring reliable operation during low voltage conditions
• Minimum 140ms reset timeout period, providing ample time for system stabilization
• Immune to short VCC transients, enhancing system robustness
• Extended industrial temperature range, for use in various environments
• Compact SOT-23 packaging, perfect for space-limited designs

The MAX6864UK31D1S+T is an excellent choice for managing µP systems requiring a precise and reliable monitoring solution. Its combination of low power consumption, compact form factor, and robust feature set makes it an essential component for ensuring system stability in a multitude of electronic products.