Maxim Integrated MAX6424UK31+ Microprocessor Reset Circuit

The Maxim Integrated MAX6424UK31+ is a compact, highly reliable microprocessor (µP) supervisory circuit designed to monitor power supplies in µP and digital systems. It provides the utmost functionality by asserting a reset signal whenever the VCC supply voltage falls below a preset threshold, ensuring that the µP resets cleanly during power-up, power-down, and brownout conditions.

This device is particularly well-suited for portable and battery-powered applications due to its low power consumption and small footprint. The MAX6424UK31+ comes in a space-saving SOT23 package, making it an excellent choice for systems where space is at a premium.

Key Features:

• Precision Monitoring: The MAX6424UK31+ has a factory-set reset threshold voltage of 3.1V, providing a precise monitoring solution for 3.3V power supplies.
• Low Power Consumption: With its ultra-low supply current of only 1.2µA, this device is ideal for power-sensitive applications.
• Manual Reset Input: A manual reset input is provided, allowing the reset to be triggered with an external signal for additional system control.
• Reset Timeout: The reset output remains asserted for a minimum of 140ms after VCC has risen above the reset threshold, ensuring adequate time for the system to stabilize.
• Immunity to Short VCC Transients: The device is designed to ignore short transients on the VCC line, enhancing system reliability.
• High-Temperature Operation: The MAX6424UK31+ is designed to operate over an extended temperature range from -40°C to +125°C, accommodating demanding environmental conditions.

Applications:

• Computers and Controllers
• Embedded Systems
• Battery-Powered Equipment
• Portable Consumer Electronics
• Data Storage Systems
• Industrial and Automotive Systems

In summary, the Maxim Integrated MAX6424UK31+ is a robust and precise reset circuit that enhances system reliability by providing a dependable reset signal under various conditions. Its compact size, low power consumption, and wide operating temperature range make it a versatile choice for a vast array of electronic applications.