MAX6354SVUK

Overview

The MAX6354SVUK+T is a dual-voltage microprocessor supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It monitors two independent supply voltages, VCC1 and VCC2, providing an active-low push-pull reset output referenced to VCC2. The device features precision factory-set thresholds of 3.08V for VCC1 and 4.63V for VCC2, with overvoltage thresholds at 3.14V and 4.72V respectively. It operates within a supply range up to 5.5V, consumes 20µA of supply current, and offers a manual reset input. The reset delay time is 180ms, and the accuracy is specified at 1.5%. The component is housed in a SOT-23-5 package and functions across an extended temperature range from -40°C to +85°C.

Feature Summary

• Monitors two independent power supplies with dedicated threshold levels
• Provides active-low push-pull reset output referenced to the secondary voltage rail
• Includes debounced manual reset input compatible with TTL/CMOS logic
• Operates with low quiescent current consumption suitable for battery-powered systems

Applications

• Multivoltage computer systems requiring simultaneous power monitoring
• Intelligent instruments with multiple internal voltage rails
• Portable and battery-powered equipment needing efficient power supervision
• Controllers requiring reliable reset generation during power transitions

Procurement Notes

Verify the specific suffix 'SV' against the official datasheet to confirm the exact voltage threshold configuration, as this series offers multiple threshold options. Ensure the '+T' indicates tape-and-reel packaging if required for automated assembly. Confirm RoHS compliance status through the manufacturer's documentation before finalizing procurement specifications.

Selection Notes

Select this component when dual-voltage monitoring is required with a reset output referenced to the second supply rail. Compare threshold values against system requirements to ensure compatibility with standard voltage levels such as 3.3V and 5V. Consider the SOT-23-5 package size for space-constrained designs and verify that the 180ms reset delay meets system startup timing constraints.

Part Context

The MAX6354 belongs to the MAX6351–MAX6360 family of dual/triple-voltage microprocessor supervisors. This series improves system reliability by replacing discrete components with integrated solutions. Unlike other variants in the family that may reference resets to VCC1 or include watchdog timers, the MAX6354 specifically provides a reset output referenced to VCC2 without a watchdog function.

Replacement Considerations

Direct pin-compatible replacements within the same family include MAX6353 and MAX6356, though these differ in reset reference voltage and monitored input count. Verify functional equivalence regarding threshold voltages and output polarity before substitution.