MAX6423US31+T

Supervisors Overview

The MAX6423US31+T is a low-power microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors system voltages and asserts a reset signal when the supply voltage falls below its threshold. The device features an active-low, open-drain reset output and utilizes a capacitor-adjustable reset timeout delay for flexibility. It operates within a supply voltage range of 1.6V to 5.5V, with a typical quiescent current of 1.6µA. The reset threshold voltage is 3.075V, and the overvoltage threshold is 3.147V. The component supports a maximum power dissipation of 245mW and functions across an operating temperature range from -40°C to +125°C.

Supervisors Feature Summary

• Monitors system voltages and asserts reset when supply drops below threshold
• Features capacitor-adjustable reset timeout period for design flexibility
• Provides active-low, open-drain reset output signal
• Operates with low quiescent current for efficient power management

Supervisors Applications

• Microprocessor system voltage supervision
• Battery-powered portable equipment monitoring
• Embedded controller power management
• Industrial control system reset circuits

Supervisors Procurement Notes

Verify the specific suffix 'US31' against official Analog Devices documentation to confirm package type (SOT-143/SC-70) and exact threshold voltage. Ensure compatibility with existing PCB footprint and reset timing requirements. Check for obsolescence notices or lifecycle status changes prior to procurement. Confirm RoHS compliance and lead-free status as per manufacturer specifications.

Supervisors Selection Notes

Select this component for applications requiring precise voltage monitoring with adjustable reset timing via external capacitance. Consider the active-low open-drain output configuration for interfacing with logic gates. Evaluate the low quiescent current requirement against battery life expectations. Ensure the operating temperature range meets the environmental conditions of the target application.

Supervisors Part Context

The MAX6423 series belongs to Maxim Integrated's family of low-power microprocessor supervisors. These devices are designed to provide reliable reset signals for digital systems. The MAX6423 variant specifically offers an open-drain output and capacitor-adjustable timeout, distinguishing it from push-pull output variants in the same family. It is part of the broader PMIC category focused on power management and system protection.

Supervisors Replacement Considerations

Consider MAX6423XS26+T for similar functionality with different threshold voltage. MAX6422US40+ offers push-pull output instead of open-drain. MAX6375XR31+T provides ultra-low power but fixed timeout. Verify pinout and electrical parameters before substitution.