MAX6354UWUK

Overview

The MAX6354UWUK is a dual-voltage microprocessor supervisory circuit from the MAX6351–MAX6360 series, manufactured by Analog Devices Inc./Maxim Integrated. It monitors two input supply voltages with factory-set thresholds of 1.67V and 2.78V. The device features an active-low, push-pull reset output referenced to VCC2, ensuring system reliability by asserting resets when any monitored voltage drops below its threshold. It includes a debounced manual reset input and operates within a supply range up to 5.5V. The IC draws only 20µA of supply current and provides a minimum power-on reset pulse width of 100ms. It is available in a compact SOT-23-5 package and functions reliably across an extended temperature range of -40°C to +85°C.

Feature Summary

• Dual-channel voltage monitoring with precision factory-set thresholds for improved system accuracy
• Active-low push-pull reset output referenced to VCC2 for reliable signal interfacing
• Debounced TTL/CMOS-compatible manual reset input for user-initiated control
• Ultra-low 20µA supply current consumption for energy-efficient operation

Applications

• Multi-supply embedded systems requiring simultaneous voltage supervision
• Portable electronic devices where low quiescent current is critical
• Industrial control units operating in extended temperature environments
• Telecommunications equipment needing robust power-fail detection

Procurement Notes

Verify the specific suffix UWUK against official Analog Devices documentation to confirm pinout compatibility and threshold levels. Confirm RoHS compliance status through the manufacturer's current datasheet revision. Check availability constraints as distribution channels may report limited stock or discontinuation statuses. Ensure the ordering part number matches the required SOT-23-5 package variant. Cross-reference electrical specifications with the latest public datasheet to avoid integration errors due to version differences.

Selection Notes

Select this component when dual independent voltage rails require supervised reset generation without external comparator circuits. The fixed thresholds of 1.67V and 2.78V suit applications monitoring standard logic supplies like 1.8V and 2.5V or 3.3V systems. Choose this part over single-channel supervisors to reduce board space and component count. The active-low output referenced to VCC2 simplifies interface design with downstream logic families. Verify that the 100ms minimum reset pulse width meets the startup timing requirements of the target microprocessor or FPGA.

Part Context

The MAX6354UWUK belongs to the MAX635x family of dual/triple-voltage supervisory circuits designed to enhance system reliability. Unlike discrete solutions, these integrated circuits provide precise threshold detection and debouncing in a small footprint. The MAX6354 variant specifically offers a reset output referenced to the second supply rail (VCC2), distinguishing it from models referencing VCC1. This family eliminates the need for separate voltage detectors and manual reset switches, streamlining power management design for complex multi-rail architectures.

Replacement Considerations

Publicly confirmed substitute part numbers are not explicitly listed in the provided source material. Engineers should consult the official Analog Devices replacement guide or contact technical support for verified cross-references. Generic equivalents may differ in threshold precision, package dimensions, or electrical characteristics. Do not assume functional interchangeability without verifying pinout compatibility and threshold voltage alignment against the original design requirements.