MAX6346XR44+T

Overview

The MAX6346XR44+T is a micropower voltage supervisor manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 1.2 V to 5.5 V and features a fixed reset threshold voltage of 4.4 V with an accuracy of 2.5%. The device draws a maximum quiescent current of 1 µA, making it suitable for battery-powered applications. It provides an active-low push-pull output with a typical reset delay time of 205 ms. The component is available in a compact SC-70-3L surface-mount package and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Ultra-low power consumption with 1 µA maximum quiescent current
• Fixed 4.4 V reset threshold with 2.5% accuracy
• Active-low push-pull output driver
• Compact SC-70-3L surface-mount packaging

Applications

• Battery-operated portable electronics
• Microprocessor system supervision
• Handheld instruments
• Wireless communication devices

Procurement Notes

Verify the exact suffix against official datasheets to confirm threshold voltage and package type. Ensure compatibility with existing PCB footprints for the SC-70-3L package. Confirm RoHS compliance status through manufacturer documentation before integration into regulated products.

Selection Notes

Select this component when a fixed 4.4 V supervision level is required for low-power systems. The SC-70-3L package offers space efficiency for dense layouts. Consider the 2.5% threshold accuracy and 205 ms delay for timing-sensitive microcontroller resets.

Part Context

This part belongs to the MAX6346/MAX6379 family of micropower voltage supervisors designed for critical system monitoring. These devices provide reliable power management in portable applications where minimizing standby current is essential for extending battery life.

Replacement Considerations

MAX6346UR44+T: Identical electrical specifications but housed in an SOT-23-3 package instead of SC-70-3L. Verify pinout compatibility and physical footprint differences before substitution.