MAX6354SWUK-T

Overview

The MAX6354SWUK-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 monitored voltage drops below its preset threshold. The device features precision factory-set thresholds of 3.08V and 4.63V, ensuring accurate supervision for critical systems. It operates with a supply current of 20µA and provides a minimum 100ms power-on reset pulse width. The circuit includes a debounced manual-reset input and functions over an extended temperature range from -40°C to +85°C.

Feature Summary

• Monitors two independent power-supply voltages with precision factory-set thresholds
• Asserts active-low push-pull reset outputs when monitored voltages fall below specified levels
• Includes a debounced TTL/CMOS-compatible manual-reset input for system control
• Operates with low supply current and guarantees reset validity down to 1.0V

Applications

• Computers and intelligent instruments requiring multi-voltage supervision
• Controllers in multivoltage systems needing reliable power monitoring
• Portable and battery-powered equipment utilizing low-power supervisory circuits

Procurement Notes

Verify the specific suffix 'SW' against official Analog Devices documentation to confirm exact threshold values and package details, as suffixes define electrical characteristics. Confirm availability status through authorized distributors, as supply constraints may apply. Ensure the component meets RoHS compliance requirements if mandated by your project specifications. Cross-reference the datasheet revision date to ensure compatibility with current design standards.

Selection Notes

Select this component when designing systems that require simultaneous monitoring of two distinct voltage rails without external components. It is suitable for applications demanding high accuracy and low quiescent current. Consider the SOT-23-5 package size for space-constrained layouts. Verify that the 3.08V and 4.63V thresholds align with the specific power rails being supervised in the target application.

Part Context

This part belongs to the MAX6351–MAX6360 series of microprocessor supervisors, which are designed to improve system reliability compared to discrete solutions. These devices offer multiple reset voltages and are available in small 5- and 6-pin SOT23 packages. The series supports various threshold combinations and includes features like watchdog timers in other variants within the same family.

Replacement Considerations

Check for direct substitutes within the MAX635x series that match the required voltage thresholds and pinout configuration. Ensure any replacement maintains the same active-low output polarity and manual reset functionality. Verify thermal and electrical specifications align with the original design requirements.