Maxim Integrated's MAX6306UK44D3 - Microprocessor Reset Circuit

The MAX6306UK44D3 is a compact, highly precise microprocessor (µP) supervisory circuit designed to maintain system integrity during power fluctuations and to manage microprocessor reset functions. Manufactured by Maxim Integrated, a leader in analog and mixed-signal products, this component is an essential piece for a wide range of applications including computers, controllers, and intelligent instruments.

This supervisory circuit is engineered to monitor the power supply voltage of a µP and other digital systems. It provides a guaranteed reset output during power-up, power-down, and brownout conditions. The MAX6306UK44D3 ensures that the µP resets to a known state during such events, preventing any erratic system behavior and improving the reliability of the system it is integrated into.

Key features of the MAX6306UK44D3 include:

• A preset reset threshold voltage of 4.4V, tailored for 5V-powered systems.
• An active-low reset output, which remains asserted for a minimum of 140ms after V<sub>CC has risen above the reset threshold level. This provides ample time for the system to stabilize before the processor starts.
• Low supply current of 17µA (typical), making it an energy-efficient choice for portable and battery-operated devices.
• A miniature SOT23-5 package, which is ideal for space-constrained applications.
• Immunity to short V<sub>CC transients, ensuring stable operation even in noisy environments.

The MAX6306UK44D3 is designed to be versatile and can be used with any microprocessor that requires an active-low reset input. Its precise voltage monitoring and robust reset features make it particularly well-suited for use in systems that cannot tolerate any uncertainty during power-up or power-down phases.

Overall, the Maxim Integrated MAX6306UK44D3 is a robust and reliable solution for system designers looking to enhance the operational stability of their digital systems. With its precision voltage monitoring and power management capabilities, it stands as a critical component for ensuring the integrity of microprocessor-based applications.