MAX6358SYUT-T

Overview

The MAX6358SYUT-T is a dual-voltage microprocessor supervisory circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It monitors two independent power supply rails and asserts active-low reset outputs when voltages drop below preset thresholds. The device features an open-drain output configuration, a manual reset input, and a watchdog timer with a 46.4-second startup timeout. It operates within a supply voltage range up to 5.5V and functions across an extended temperature range of -40°C to +85°C.

Feature Summary

• Monitors two independent voltage inputs for system reliability
• Provides active-low reset signals via open-drain outputs
• Includes a debounced manual reset input for user control
• Integrates a watchdog timer with extended startup timeout

Applications

• Embedded systems requiring multi-rail power supervision
• Industrial control units needing voltage monitoring
• Communication equipment power management circuits

Procurement Notes

Verify component authenticity through authorized channels due to potential availability constraints. Confirm package integrity and pin alignment before installation. Ensure storage conditions comply with moisture sensitivity level requirements. Cross-reference datasheet specifications against current design parameters to validate compatibility with existing system architectures.

Selection Notes

Evaluate threshold voltage accuracy requirements against specific rail tolerances. Consider the open-drain output limitation for pull-up resistor selection. Assess watchdog timer functionality needs relative to software execution cycles. Verify thermal performance within the specified operating temperature range for the target application environment.

Part Context

This component belongs to the MAX6351-MAX6360 series of dual/triple-voltage supervisory circuits. These devices improve system reliability compared to discrete solutions by integrating precision monitoring into a compact SOT-23-6 package. The series supports various threshold levels and includes features like manual reset and watchdog timers for comprehensive power management.

FAQ

What is the function of the manual reset input?

The manual reset input allows users to force the reset outputs low, providing a method to restart the monitored system or clear fault conditions.

How does the watchdog timer operate in this circuit?

The watchdog timer requires periodic triggering; failure to trigger within the specified period causes the reset output to assert, indicating a software or hardware malfunction.