MAX6354TWUK+

Overview

The MAX6354TWUK+T is a dual-voltage microprocessor supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It monitors two independent supply rails with preset thresholds of 3.08V and 4.63V, asserting active-low push-pull reset outputs when voltages drop below these levels. The device operates within a supply range up to 5.5V and features a manual reset input. It provides a minimum reset pulse width of 100ms and maintains output validity as long as either monitored voltage exceeds +1.0V. The component functions over an extended temperature range from -40°C to +85°C.

Feature Summary

• Dual-channel monitoring for simultaneous supervision of multiple power supplies
• Active-low push-pull reset outputs referenced to specific supply rails
• Debounced manual reset input compatible with TTL/CMOS logic levels
• Low quiescent current consumption suitable for battery-powered applications

Applications

• Multi-rail embedded system power management
• Industrial control unit voltage supervision
• Telecommunications equipment power integrity monitoring

Procurement Notes

Verify the exact suffix against official datasheets, as variations may indicate different threshold voltages or package types. Confirm availability status through authorized distributors, as supply constraints may affect lead times. Ensure RoHS compliance documentation matches the specific batch requirements for your manufacturing process.

Selection Notes

Select this component when precise monitoring of two distinct voltage rails is required without external resistors. Consider the fixed threshold values of 3.08V and 4.63V to ensure compatibility with standard logic supply levels. Evaluate the SOT-23-5 footprint for space-constrained designs requiring surface-mount integration.

Part Context

This part belongs to the MAX635x series of µP supervisors designed to improve system reliability. These circuits replace discrete components by integrating precision comparators and timers into a single package. The series supports various threshold combinations to accommodate diverse power architecture needs in portable and industrial electronics.

Replacement Considerations

Check the MAX6353LTUK+T for similar dual-voltage monitoring with potentially different reference rail configurations. Verify the MAX6355LTUK+T if a third voltage monitor channel is required alongside dual-supply supervision.