MAX6354SWUK

Overview

The MAX6354SWUK is a dual-voltage microprocessor supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It monitors two independent power supplies with precision factory-set thresholds of 2.70V and 4.63V. The device features an active-low, push-pull reset output referenced to the VCC2 supply rail. It includes a debounced manual reset input compatible with TTL and CMOS logic levels. The part operates within a supply voltage range up to 5.5V and maintains functionality down to 1.0V on monitored inputs. It offers a minimum power-on reset pulse width of 100ms and consumes only 20µA of supply current. The component is housed in a compact SOT-23-5 surface-mount package.

Feature Summary

• Dual-voltage monitoring with precision factory-set thresholds for improved system reliability
• Active-low push-pull reset output referenced to the secondary supply rail
• Debounced manual reset input compatible with standard logic families
• Low quiescent current consumption suitable for battery-powered applications

Applications

• Multivoltage computer systems requiring simultaneous supply validation
• Intelligent instruments needing precise voltage supervision
• Portable and battery-powered equipment demanding low power operation
• Controllers in industrial environments requiring extended temperature stability

Procurement Notes

Verify the specific suffix 'SW' against the official Maxim Integrated part numbering guide to confirm threshold voltages and package type. Ensure compatibility with the target PCB footprint for the SOT-23-5 package. Confirm RoHS compliance status if required by project specifications. Check for obsolescence notices or lifecycle status updates from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when dual-rail supervision is required with fixed threshold values. The MAX6354 variant is appropriate for systems where the reset output must be referenced to the higher voltage rail (VCC2). Consider the 100ms minimum reset pulse width for timing requirements. Evaluate the 20µA standby current against total system power budgets. Compare against other MAX635x series parts if different threshold combinations or watchdog features are needed.

Part Context

The MAX6354 belongs to the MAX6351–MAX6360 family of dual/triple-voltage microprocessor supervisors. This series improves system accuracy compared to discrete components. The MAX6354 specifically provides two reset outputs or one reset output referenced to VCC2, depending on the exact sub-part. It eliminates external components for dual-voltage systems, reducing board space and complexity.

Replacement Considerations

Direct replacements include other MAX635x series devices such as MAX6353 or MAX6355, provided the threshold voltages and reference rails match the design requirements. Verify that substitute parts maintain the same SOT-23-5 package and electrical characteristics.