MAX6354LSUK

Overview

The MAX6354LSUK is a dual-voltage microprocessor supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It monitors two independent power-supply voltages, asserting active-low reset outputs when inputs drop below preset thresholds of 3.08V and 4.63V. The device features push-pull outputs referenced to VCC2, a manual reset input, and an 180ms reset delay. Operating from -40°C to +85°C with a maximum supply voltage of 5.5V, it consumes only 20µA. Accuracy is specified at 1.5%, ensuring reliable system supervision in multi-rail environments without external components.

Feature Summary

• Monitors two distinct power-supply rails simultaneously
• Provides active-low push-pull reset signals
• Includes debounced manual reset capability
• Operates with low quiescent current consumption

Applications

• Multi-voltage embedded systems
• Portable battery-powered equipment
• Intelligent instruments requiring dual-rail supervision
• Controllers needing precise voltage monitoring

Procurement Notes

Verify the exact suffix against official datasheets, as variations like LTUK or LSUK may indicate different temperature grades or packaging options. Confirm availability status directly with authorized distributors, as supply constraints may apply. Ensure the component matches the specific threshold requirements for your design before procurement.

Selection Notes

Select this component when simultaneous monitoring of two voltage rails is required. Verify that the factory-set thresholds of 3.08V and 4.63V align with your system's critical supply levels. Consider the SOT-23-5 package size for space-constrained designs and ensure the 1.5% accuracy meets your system reliability standards.

Part Context

Part of the MAX6351–MAX6360 series of dual/triple-voltage supervisors designed to improve system reliability. These devices replace discrete monitoring components, offering integrated precision thresholds and reduced board space. The series supports various voltage combinations and packages, catering to diverse industrial and consumer electronics applications.

Replacement Considerations

Check for direct pin-compatible alternatives within the MAX635x family, such as MAX6353 or MAX6356, which offer similar functionality but potentially different output references or additional monitoring channels. Ensure substitute parts maintain the same voltage thresholds and package dimensions.