Maxim Integrated MAX6801UR44D3+T Microprocessor Reset Circuit

The MAX6801UR44D3+T is a compact, highly reliable microprocessor (µP) supervisory circuit designed and manufactured by Maxim Integrated. This device is engineered to monitor power supplies in µP and digital systems, providing a robust level of protection by ensuring that the µP resets properly during a power failure. It is an essential component for systems that require a high degree of operational stability and accuracy.

With its precision factory-set reset threshold voltage, the MAX6801UR44D3+T monitors the VCC for undervoltage conditions. When VCC falls below the reset threshold, the reset output is asserted, which remains active for a minimum reset timeout period after VCC rises above the reset threshold. This ensures that the system has sufficient time to stabilize before the processor restarts, preventing any erroneous operations due to power supply inconsistencies.

The device comes in a compact SOT-23 package, making it ideal for space-constrained applications. Its low supply current of 5.5µA (typical) is particularly beneficial for portable and battery-powered equipment, where power efficiency is critical.

Key features of the MAX6801UR44D3+T include:

• Reset threshold voltage precision set for 4.40V
• Low power consumption with 5.5µA typical supply current
• Minimum reset timeout of 140ms ensures system stability
• Immune to short VCC transients
• Capable of operating over a wide temperature range of -40°C to +125°C
• Available in a small SOT-23 3-pin package

This reset circuit is ideal for a wide range of applications including computers, controllers, intelligent instruments, critical µP and µC power monitoring. With its high accuracy and reliability, the MAX6801UR44D3+T from Maxim Integrated is a critical component for maintaining the integrity of digital systems, ensuring that they operate without interruption, regardless of the stability of the power supply.

Whether you're designing consumer electronics, industrial controls, or automotive systems, the MAX6801UR44D3+T offers a simple and effective solution for safeguarding your microprocessor-based applications.