Maxim Integrated MAX6423US44+T Microprocessor Supervisory Circuit

The Maxim Integrated MAX6423US44+T is a highly reliable microprocessor (µP) supervisory circuit designed to monitor power supplies and µP activity in digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used in systems with a 4.4V power supply voltage.

Key Features

• Voltage Monitoring: The device offers precision monitoring of a 4.4V power supply, ensuring that the system operates within safe voltage levels.
• Reset Output: It provides a reset output during power-up, power-down, and brownout conditions. The reset signal remains asserted for a minimum of 140ms after VCC has risen above the reset threshold, ensuring the system has stabilized before the µP begins operation.
• Low Power Consumption: This supervisory circuit is designed for low-power operation, which is critical for battery-operated devices, drawing a low quiescent current of only 1.2µA.
• High Accuracy: The reset threshold is factory-set with high accuracy, which can help to eliminate the need for external trimming components.
• Manual Reset Input: The inclusion of a manual reset input allows for a system reset to be triggered with an external switch or logic signal.

Applications

• Portable/Battery-Powered Equipment
• Computers and Controllers
• Embedded Systems
• Data Storage Equipment
• Industrial and Automotive Systems

The MAX6423US44+T is available in a compact SOT-143 package, making it suitable for space-constrained applications. Its extended temperature range of -40°C to +125°C allows for operation in harsh environments, ensuring reliable performance across diverse applications.

With its combination of features, the MAX6423US44+T from Maxim Integrated is an excellent choice for designers looking to enhance the reliability and performance of their digital systems with a robust power supply monitoring solution.