MAX6359UVUT

Overview

The MAX6359UVUT is a dual-voltage microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 1.0V to 5.5V and features two independent voltage monitor inputs with preset thresholds of 3.08V and 4.63V. The device provides an active-low, push-pull reset output referenced to VCC1, ensuring system reliability by asserting reset when any monitored voltage drops below its threshold. It includes a manual reset input and a watchdog timer with a 2.9s timeout period. The component operates over an extended temperature range of -40°C to +85°C with a typical supply current of 20µA.

Feature Summary

• Dual-voltage monitoring with factory-set thresholds for precise power-supply supervision
• Integrated watchdog timer with defined startup and operating timeout periods
• Debounced manual reset input compatible with TTL/CMOS logic levels

Applications

• Microprocessor power-supply monitoring in embedded systems
• Battery-operated devices requiring low quiescent current
• Industrial control systems needing extended temperature operation

Procurement Notes

Verify the specific suffix UVUT against official Analog Devices documentation to confirm pinout and threshold configurations. Confirm RoHS compliance status through manufacturer datasheets or certificates of conformity. Ensure the sourcing channel provides genuine components with traceable lot codes to prevent counterfeit risks. Cross-reference the part number with the latest MAX635x series documentation for any design-in updates.

Selection Notes

Select this component when dual-rail supervision is required with fixed threshold voltages. The 20µA supply current makes it suitable for battery-powered applications. Verify that the 180ms reset delay meets system timing requirements. Ensure the SOT-23-6 package fits the PCB layout constraints. Compare against other MAX635x variants if adjustable thresholds or additional channels are needed.

Part Context

The MAX6359 belongs to the MAX6351–MAX6360 family of dual/triple-voltage supervisory circuits designed to improve system reliability. These devices replace discrete monitoring components with integrated solutions offering precision thresholds. The MAX6359 specifically monitors two voltages and includes a watchdog timer, distinguishing it from simpler supervisors. It shares the SOT-23-6 package form factor with related parts like the MAX6356 and MAX6357.

FAQ

What is the watchdog timer timeout period for the MAX6359?

The MAX6359 features a watchdog timer with a 2.9-second timeout period during normal operation.

How many voltage inputs does the MAX6359 monitor?

The MAX6359 monitors two independent voltage inputs with preset thresholds of 3.08V and 4.63V.