MAX6355TWUT+T

Overview

The MAX6355TWUT+T is a triple-voltage microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors three independent power-supply voltages and asserts an active-low reset output when any monitored voltage drops below its preset threshold. The device operates with a supply voltage range up to 5.5V and features a debounced manual reset input. It includes a watchdog timer with a 46.4s startup timeout and a 2.9s timeout period. The component is housed in a 6-pin SOT-23 package and operates over an extended temperature range of -40°C to +85°C.

Feature Summary

• Triple voltage monitoring capability for enhanced system reliability
• Integrated watchdog timer with specified startup and operating timeouts
• Debounced manual reset input compatible with TTL/CMOS logic levels

Applications

• Microprocessor (µP) system supervision
• Multi-voltage power supply monitoring
• Embedded systems requiring multiple voltage thresholds

Procurement Notes

Verify the exact suffix 'TWUT' against the official datasheet to confirm pinout, threshold voltages, and package type. Confirm RoHS compliance status and check for obsolescence notices from Analog Devices. Ensure the supplier provides valid traceability documentation as this component may be subject to lifecycle changes.

Selection Notes

Select this component when simultaneous monitoring of three distinct voltage rails is required within a compact SOT-23-6 footprint. Consider the specific threshold voltages provided in the datasheet table to ensure they match the target power supplies. Evaluate the need for the integrated watchdog timer versus external solutions based on system complexity and safety requirements.

Part Context

This part belongs to the MAX6351–MAX6360 series of dual/triple-voltage µP supervisory circuits. These devices are designed to improve system accuracy compared to discrete components. The series offers various threshold levels and output configurations, including push-pull and open-drain options, catering to diverse embedded design needs.

Replacement Considerations

Check the MAX6355LTUT+T or MAX6355LSUT+T for similar triple-monitoring functionality. Verify that alternative parts match the SOT-23-6 package and have compatible threshold voltages. Ensure replacement parts support the required watchdog timer features if critical to the application.