MAX6354LSUK-T

Overview

The MAX6354LSUK-T is a dual-voltage microprocessor supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It monitors two independent power-supply voltages and asserts active-low reset outputs when any input drops below its preset threshold. The device features precision factory-set thresholds of 3.08V and 4.63V with 1.5% accuracy. It operates on a single supply up to 5.5V, drawing only 20µA. Key electrical parameters include a minimum 100ms power-on reset pulse width, a manual reset input, and an operating temperature range of -40°C to +85°C.

Feature Summary

• Monitors multiple power-supply voltages simultaneously to improve system reliability
• Provides active-low push-pull reset outputs referenced to specific supply rails
• Includes a debounced manual-reset input compatible with TTL/CMOS logic
• Operates with low supply current for battery-powered applications

Applications

• Computers and intelligent instruments
• Controllers in multivoltage systems
• Portable and battery-powered equipment

Procurement Notes

Verify the exact suffix against official documentation, as variations like LTUK+T or UKZD0+T exist within the family. Confirm RoHS compliance status and package type (SOT-23-5) during sourcing. Check current availability as some variants may have limited stock or discontinuation notices. Ensure the specific voltage thresholds match your design requirements before ordering.

Selection Notes

Select this component when precise monitoring of two distinct voltage rails is required without external components. The fixed thresholds simplify design compared to adjustable supervisors. Consider the 1.5% accuracy and 100ms reset delay for timing-sensitive applications. Verify that the SOT-23-5 package fits the PCB layout constraints and thermal requirements of the target environment.

Part Context

This part belongs to the MAX6351–MAX6360 series of dual/triple-voltage µP supervisors. These devices replace separate ICs or discrete components to enhance accuracy. The series offers various threshold combinations and package options, including 5-pin and 6-pin SOT23 formats, designed for extended industrial temperature ranges.

Replacement Considerations

Check for direct substitutes within the MAX635x series with matching thresholds. Verify pin compatibility if replacing with similar supervisors from other manufacturers. Ensure the replacement supports the same voltage range and output configuration.