Maxim Integrated MAX6423US46+T Microprocessor Reset Circuit

The MAX6423US46+T is a highly reliable microprocessor (µP) supervisory circuit designed by Maxim Integrated to monitor power supplies in digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used with +5V-powered circuits.

This compact device is engineered to assert a reset signal whenever the VCC supply voltage declines below a preset threshold, ensuring that the µP and its peripherals are reset properly during power-up, power-down, and brown-out conditions. The reset signal remains asserted for a minimum timeout period after VCC has risen above the reset threshold level, providing ample time for the system to stabilize.

Key features of the MAX6423US46+T include:

• Precision Monitoring: With a factory-set reset threshold voltage, this component ensures precise monitoring of the system voltage without the need for external resistors or adjustments.
• Low Power Consumption: Designed for energy efficiency, the MAX6423US46+T consumes minimal power, making it suitable for battery-operated applications.
• Manual Reset Input: A manual reset input is provided, allowing for a reset to be triggered with an external switch or logic signal, offering additional system control.
• Robust Reset Output: The device's reset output is guaranteed to be in the correct state for VCC down to 1V, ensuring reliable operation even under extreme conditions.
• Compact SOT Package: The MAX6423US46+T is available in a small, surface-mount SOT23 package, making it ideal for space-constrained applications.

The device is suitable for a wide range of applications, including portable/battery-powered equipment, computers, controllers, intelligent instruments, and critical µP and µC power monitoring. Its temperature range is specified from -40°C to +125°C, accommodating diverse operating environments.

With its robust feature set and Maxim Integrated's reputation for quality, the MAX6423US46+T is an excellent choice for designers looking to enhance system reliability and performance with a minimal footprint.