MAX6347XR37-T

Overview

The MAX6347XR37-T is a single-channel microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 1.8V to 5.5V and consumes only 500nA of quiescent current. The device features a fixed reset threshold voltage of 3.7V with an accuracy of 2.5%. It provides a push-pull active-high reset output and includes a minimum reset timeout delay of 100ms. The component is housed in a compact SC-70 (SOT-323) surface-mount package and supports an extended industrial operating temperature range from -40°C to +85°C.

Feature Summary

• Ultra-low power consumption of 500nA for battery-operated applications
• Fixed 3.7V factory-set reset threshold with high precision
• Compact SC-70 surface-mount packaging for space-constrained designs

Applications

• Portable electronic devices requiring low standby current
• Battery-powered instrumentation systems
• Microprocessor power supply monitoring circuits

Procurement Notes

Verify the exact suffix configuration against official datasheets, as variations may affect electrical characteristics or pinout compatibility. Confirm availability status through authorized distributors, as this specific part number may be subject to limited stock or end-of-life constraints. Ensure the selected variant matches the required reset polarity and threshold voltage for the target application design.

Selection Notes

Select this component when a fixed 3.7V threshold and active-high output are required. Compare against the MAX6348 series if lower quiescent current is needed, noting that the MAX6348 offers open-drain outputs. Verify that the 100ms timeout delay meets system startup requirements. Consider the SC-70 footprint constraints during PCB layout planning.

Part Context

This component belongs to the MAX6347/MAX6348 family of uPower Reset Circuits designed for low-voltage digital systems. These supervisory ICs provide reliable power management by monitoring supply rails and generating reset signals. The MAX6347 variant specifically offers a push-pull output stage, distinguishing it from the open-drain MAX6348 series within the same product line.

Replacement Considerations

MAX6348XR37+T: Offers similar threshold but uses open-drain output instead of push-pull.