MAX6348UR42

Overview

The MAX6348UR42 is a single-channel voltage supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range up to 5.5 V and features a fixed threshold voltage of 4.2 V. The device provides an active low, open-drain output signal with a reset delay time of 280 ms. It consumes ultra-low power, drawing only 500 nA of operating current. The component is housed in a compact SOT-23-3 package and is rated for operation between -40°C and +85°C.

Feature Summary

• Ultra-low power consumption suitable for battery-operated systems
• Fixed voltage threshold monitoring for precise supervision
• Compact three-pin surface-mount packaging

Applications

• Portable electronic devices requiring low standby current
• Battery-powered instrumentation systems
• Microprocessor reset circuits in space-constrained designs

Procurement Notes

Verify the specific suffix and manufacturer designation carefully, as this component may be obsolete or discontinued. Confirm availability through authorized distributors or secondary markets. Ensure the part number matches the exact electrical specifications required for your design, particularly the 4.2 V threshold and open-drain output configuration.

Selection Notes

Select this component when a fixed 4.2 V supervision level is required with minimal quiescent current. The open-drain output allows for flexible interfacing with various logic levels. Consider the thermal performance and package size constraints, as the SOT-23-3 form factor limits heat dissipation capabilities compared to larger packages.

Part Context

This part belongs to the MAX6348 series of microprocessor reset circuits designed for low-power applications. The series offers various threshold voltages to accommodate different supply rails. The UR42 variant specifically targets 4.2 V monitoring needs within the standard industrial temperature range.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.