Maxim Integrated MAX6825YUK-T Microprocessor Reset Circuit

The Maxim Integrated MAX6825YUK-T is a highly reliable microprocessor (µP) supervisory circuit designed to monitor power supplies in µP and digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used in systems with 5V power supplies.

This compact supervisory circuit ensures that the µP is reset to a known state during power-up, power-down, or brown-out conditions. The MAX6825YUK-T features a preset threshold voltage of 4.63V, which makes it suitable for operation with standard 5V power supplies. Its active-low RESET output remains asserted for a minimum of 140ms after VCC has risen above the reset threshold level, providing ample time for the system to stabilize before the processor starts its operation.

The device comes in a small, 5-pin SOT23 package, making it ideal for space-constrained applications. With its low supply current of only 5.5µA, the MAX6825YUK-T is also an excellent choice for portable and battery-operated equipment where power efficiency is critical.

Key features of the MAX6825YUK-T include:

• Precision monitoring of 5V power supplies
• Factory-set reset threshold voltage of 4.63V
• Immune to short VCC transients
• 140ms (min) reset pulse width
• Low supply current of 5.5µA
• Active-low RESET output
• Temperature range: -40°C to +85°C
• Small 5-pin SOT23 package

The MAX6825YUK-T is ideal for use in computers, controllers, intelligent instruments, critical µP and µC power monitoring, and portable/battery-powered equipment. Its robust design ensures that the digital system reliably initiates in the correct state, even under adverse conditions.

By integrating the MAX6825YUK-T into your design, you can enhance the overall stability and dependability of your system, ensuring that it performs optimally under various power conditions. Maxim Integrated's commitment to quality and reliability makes the MAX6825YUK-T a smart choice for safeguarding your critical applications.