MAX6466XR44+

Overview

The MAX6466XR44+ is a single-input ultra-low-power voltage detector and microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 1.2V to 6V, featuring a precise threshold voltage of 4.4V with an accuracy of 2.5%. The device provides an active low, open-drain output and includes a reset delay time of 150ms. It consumes only 3.5µA of quiescent current and functions reliably across an extended temperature range from -40°C to +125°C. Packaged in a compact SC-70-3 surface-mount case, it eliminates the need for external components.

Feature Summary

• Ultra-low power consumption with 3.5µA operating current
• Precision internal threshold setting with 2.5% accuracy
• Integrated 5% hysteresis for noise immunity
• Compact SC-70-3 surface-mount packaging

Applications

• Battery-powered portable electronics monitoring
• Microprocessor system voltage supervision
• Low-voltage indicator circuits
• Embedded system power management

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to potential counterfeit risks. Confirm RoHS compliance status and specific lot traceability requirements before procurement. Ensure storage conditions adhere to moisture sensitivity level guidelines to maintain package integrity. Cross-reference ordering suffixes carefully to match exact threshold and package specifications required for your design.

Selection Notes

Select this component when designing systems requiring minimal standby current and precise voltage monitoring without manual reset functionality. The fixed 4.4V threshold suits applications where nominal supply voltages are stable near this value. Consider the 150ms timeout period against system startup requirements. The open-drain output allows flexible interfacing with various logic levels, while the wide operating temperature range ensures reliability in harsh environments.

Part Context

This part belongs to the MAX6461–MAX6466 family of ultra-low-power voltage detectors and µP supervisory circuits. The family offers thresholds from 1.6V to 5.5V in 100mV increments. Unlike the faster MAX6461–MAX6463 detectors, the MAX6466 series includes a minimum reset timeout period of 150ms, making it suitable for microprocessor supervision rather than simple detection tasks.

Replacement Considerations

Public confirmed substitute part numbers: MAX6466XR44+T (tape and reel variant), MAX6466UK44+T (SOT-23-5 package variant).