MAX6346XR37

Overview

The MAX6346XR37 is a single-channel microprocessor supervisory circuit manufactured by Maxim Integrated. It monitors power-supply voltages and asserts a reset output when the supply falls below a factory-set threshold of 3.7V. The device operates with a minimum reset timeout period of 100ms after the voltage rises above the threshold. It features ultra-low supply current consumption and supports an operating temperature range from -40°C to +85°C. The component is housed in a compact SC-70-3 package.

Feature Summary

• Monitors a single power supply voltage against a fixed 3.7V threshold
• Provides a push-pull active-low reset output signal
• Ensures reliable system recovery with a minimum 100ms reset timeout delay
• Operates within a standard industrial temperature range of -40°C to +85°C

Applications

• Microprocessor power supply supervision
• Battery-powered portable electronics monitoring
• Embedded system reset management
• Low-voltage circuit protection

Procurement Notes

Verify the exact part marking and datasheet revision upon receipt, as manufacturing sources may vary between Analog Devices Inc. and Maxim Integrated. Confirm that the received components match the specified SC-70-3 package and the 3.7V threshold requirement for your specific application design. Ensure compliance with RoHS standards if required by your project specifications.

Selection Notes

Select this component when a fixed 3.7V reset threshold is required for a single-rail power supply. It is suitable for applications needing low quiescent current and a compact footprint. Consider alternative models if adjustable thresholds or dual-channel monitoring are necessary. Verify that the 100ms minimum timeout meets the timing requirements of the target microprocessor or logic circuit.

Part Context

This part belongs to the MAX63xx series of low-voltage, low-power microprocessor reset circuits. These devices are designed to monitor supply voltages ranging from 1.8V to 5.0V. The series offers various options for reset thresholds, timeout delays, and output types to accommodate different system architectures and reliability requirements.

Replacement Considerations

Compatible substitutes include other parts from the MAX63xx family with matching 3.7V thresholds and SC-70-3 packages, such as the MAX6346XR37-T. Ensure any replacement maintains the same push-pull output configuration and thermal characteristics.