MAX6339IUT+T

Overview

The MAX6339IUT+T is a precision quad voltage monitor with microprocessor supervisory reset timing. It monitors up to four system supply voltages using open-drain outputs. The device operates within a supply voltage range of 1V to 5.5V and features a typical quiescent current of 55µA. Threshold voltages include fixed options such as 1.26V, 3.15V, and 4.75V, alongside an adjustable channel. It provides a fixed reset delay time of 200ms and maintains accuracy within 5%. The component is housed in a compact SOT-23-6 package and supports operation across a temperature range of -40°C to +85°C.

Feature Summary

• Monitors up to four independent system supply voltages simultaneously
• Provides active-low open-drain supervisory reset signals
• Integrates fixed 200ms reset delay timer for stable power-up sequencing
• Operates with low quiescent current suitable for battery-powered applications

Applications

• Multi-rail embedded systems requiring simultaneous voltage supervision
• Microprocessor and digital signal processor power management circuits
• Portable electronic devices utilizing multiple voltage domains
• Industrial control systems with strict power integrity requirements

Procurement Notes

Verify the specific suffix (e.g., IUT) against the required threshold voltage configuration and operating temperature grade. Confirm RoHS compliance status and lead times directly with authorized distributors, as availability may vary by region. Ensure the SOT-23-6 footprint matches the design layout before finalizing procurement orders.

Selection Notes

Select this component when monitoring four distinct voltage rails is necessary within a limited board space. The fixed 200ms delay suits applications where immediate reset assertion upon undervoltage is not critical. Consider the 5% accuracy tolerance for precise threshold detection needs. Verify that the open-drain output capability aligns with the downstream logic interface requirements.

Part Context

This part belongs to the MAX6339P series of quad voltage supervisors from Analog Devices/Maxim Integrated. It complements other single or dual channel monitors in the portfolio by offering multi-voltage supervision in a small form factor. The series targets cost-sensitive designs requiring reliable power management without complex external components.

Replacement Considerations

Check for direct pin-compatible alternatives within the MAX6338 or MAX6340 families if different threshold configurations are needed. Verify that substitute parts maintain the same SOT-23-6 package and electrical characteristics to ensure seamless integration without PCB redesign.