Maxim Integrated MAX6327UR31-T Microprocessor Reset Circuit

The MAX6327UR31-T from Maxim Integrated is a highly reliable, low-power microprocessor (µP) supervisory circuit designed to monitor power supplies in µP and digital systems. It provides a significant level of system reliability and accuracy required in critical applications. This component is particularly suitable for portable and battery-powered electronics due to its low power consumption and compact SOT23 packaging.

With a factory-trimmed reset threshold voltage of 3.1V, the MAX6327UR31-T ensures that systems with a 3.3V power supply can operate safely by monitoring the supply voltage and asserting a reset signal whenever the supply voltage drops below the threshold. The reset output remains asserted for a minimum of 140ms (typical) after the supply voltage rises above the reset threshold, providing ample time for the system to stabilize.

One of the key features of the MAX6327UR31-T is its ultra-low supply current of only 1µA (typical), which makes it an ideal choice for power-sensitive designs. Additionally, the device offers a debounced manual reset input, allowing for a manual assertion of the reset signal when necessary. This is particularly useful for system maintenance or emergency shutdown procedures.

The device is available in a small SOT23-3 package, which is highly advantageous for space-constrained applications. Its temperature range extends from -40°C to +85°C, allowing for operation in a wide range of environmental conditions.

Key features of the MAX6327UR31-T include:

• Factory-set reset threshold voltage: 3.1V
• Low supply current: 1µA (typ.)
• Minimum reset pulse duration: 140ms (typ.)
• Manual reset input
• Small SOT23-3 package
• Operating temperature range: -40°C to +85°C

The MAX6327UR31-T from Maxim Integrated is an essential component for system designers who require a reliable and precise monitoring solution for their µP systems, particularly in portable and space-sensitive applications. Its combination of low power consumption, compact form factor, and robust feature set makes it an excellent choice for ensuring system stability and integrity.