MAX6348XR42-T

Overview

The MAX6348XR42-T is a voltage supervisory circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It monitors a single input voltage with a threshold of 4.2 V and an overvoltage threshold of 4.446 V. The device features an active low, open-drain output type and operates within a supply voltage range up to 5.5 V. It includes a reset delay time of 185 ms and maintains an accuracy of 1.5%. The component works in temperatures from -40°C to +85°C, consumes 500 nA of operating current, and dissipates 174 mW. It is housed in a SC-70-3 package.

Feature Summary

• Ultra-low-power consumption suitable for battery-operated applications
• Compact surface-mount packaging for space-constrained designs
• Fixed threshold monitoring for reliable power supervision

Applications

• Portable electronic devices requiring power management
• Battery-powered systems needing voltage supervision
• Embedded systems utilizing microprocessor reset circuits

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging if required. Confirm RoHS compliance status as documentation may vary by production batch. Check for obsolescence or lifecycle changes directly with the manufacturer. Ensure the SC-70-3 footprint matches your PCB design constraints before ordering.

Selection Notes

Select this part when a fixed 4.2 V threshold is appropriate for the monitored rail. Consider the 185 ms delay for system startup timing requirements. Evaluate the 500 nA quiescent current against total system power budgets. Verify that the open-drain output interface is compatible with the downstream logic levels.

Part Context

This component belongs to the MAX6348 series of ultra-low-power reset circuits. It is designed for applications where minimal standby current is critical. The series offers various threshold voltages to accommodate different supply rails. It serves as a simple supervisor without manual reset or watchdog timer functionality.

Replacement Considerations

Check for MAX6348XR44+T for a 4.38 V threshold variant. Verify compatibility with other MAX6348 family members sharing the SC-70-3 package. Ensure substitute parts maintain similar quiescent current and delay specifications.