MAX6354LTUK

Overview

The MAX6354LTUK is a dual-voltage microprocessor supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It monitors two independent power supplies with factory-set thresholds of 3.08 V and 4.63 V, asserting active-low push-pull reset outputs when voltages drop below these levels. The device operates within a supply range up to 5.5 V and features a manual reset input with debouncing. It draws 20 µA of supply current and provides a minimum 100 ms power-on reset pulse width. The component functions reliably down to 1.0 V on monitored inputs and operates across an extended temperature range from -40°C to +85°C.

Feature Summary

• Monitors two distinct voltage rails with precision factory-set thresholds
• Provides active-low push-pull reset outputs referenced to specific supply rails
• Includes a debounced manual reset input compatible with TTL/CMOS logic
• Maintains valid reset states even if one monitored supply falls below operating voltage

Applications

• Multivoltage embedded systems requiring simultaneous power supervision
• Portable and battery-powered equipment needing low quiescent current
• Industrial controllers monitoring critical logic and peripheral voltages
• Computers and intelligent instruments ensuring system stability during power transitions

Procurement Notes

Verify the exact suffix for ordering, as availability varies by region. Confirm RoHS compliance status through official documentation before integration. Check for obsolescence notices or lifecycle changes directly from the manufacturer. Ensure the SOT-23-5 package footprint matches your PCB design constraints. Validate threshold voltage accuracy requirements against the datasheet specifications.

Selection Notes

Select this component when precise monitoring of two specific voltage levels is required without external resistors. The fixed thresholds eliminate calibration needs compared to adjustable supervisors. Consider the 20 µA current consumption for battery-sensitive designs. Verify that the active-low output polarity matches your system's reset logic requirements. Ensure the operating temperature range covers your environmental conditions.

Part Context

This part belongs to the MAX6351–MAX6360 family of dual/triple-voltage supervisors. These devices improve system reliability by replacing discrete components with integrated solutions. The series offers various threshold combinations and package options. The MAX6354 specifically targets applications requiring separate reset outputs for different supply domains.

Replacement Considerations

Check for direct pin-compatible alternatives within the MAX635x series with different threshold values. Verify functional equivalence with other Maxim dual-supervisor ICs if sourcing constraints exist. Ensure any substitute maintains the same SOT-23-5 package and electrical characteristics.