Maxim Integrated MAX6864UK31D3S+T Microprocessor Reset Circuit

The MAX6864UK31D3S+T is a highly reliable microprocessor (µP) supervisory circuit designed by Maxim Integrated to monitor power supplies in digital systems. This component provides excellent circuit reliability and low cost by eliminating external components and adjustments when used in systems with a 3.1V power supply voltage.

This supervisory circuit ensures that the microprocessor is reset to a known state during power-up, power-down, or brown-out conditions. The reset output remains asserted for a minimum timeout period after VCC has risen above the reset threshold level, providing a guaranteed reset signal for the processor even with the fastest VCC start-up ramps.

Key Features:

• Precision Monitoring: The device features a factory-trimmed reset threshold suitable for monitoring a 3.1V power supply, ensuring precise and reliable operation.
• Low Power Consumption: With its low supply current of 1.6µA (typ), the MAX6864UK31D3S+T is ideal for portable battery-operated applications where power efficiency is crucial.
• Manual Reset Input: A manual reset input is provided, allowing for a system reset to be initiated by an external signal or button press.
• Reset Timeout: The reset timeout period is internally set to 140ms (min), which ensures proper system reset without the need for external timing components.
• Operating Temperature Range: It operates over an extended temperature range of -40°C to +125°C, making it suitable for industrial applications.
• Small Form Factor: The device comes in a compact SOT-23 package, which saves space on PCBs and is suitable for space-constrained applications.

The MAX6864UK31D3S+T is designed for use in a wide range of applications including computers, controllers, intelligent instruments, automotive systems, and critical µP and µC power monitoring. Its robust design and precision make it an essential component for ensuring the stability and proper functioning of electronic systems. With Maxim Integrated's reputation for high-quality components, this reset circuit is a reliable choice for designers looking to enhance system integrity.