MAX6348UR44+T

Overview

The MAX6348UR44+T is a voltage supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of up to 5.5 V and features a fixed threshold voltage of 4.38 V for monitoring a single input. The device provides an active low, open-drain output signal with a reset delay time of 100 ms minimum. It consumes only 500 nA of operating current, making it suitable for ultra-low-power applications. The component is housed in a compact SOT-23-3 package and is designed for surface mount installation.

Feature Summary

• Ultra-low power consumption with 500 nA operating current
• Fixed 4.38 V threshold voltage for precise monitoring
• Active low open-drain output configuration
• Compact SOT-23-3 surface-mount packaging

Applications

• Portable battery-powered equipment
• Microprocessor system supervision
• Battery backup circuits
• Consumer electronics power management

Procurement Notes

Verify the exact suffix UR44 to confirm the 4.38 V threshold and SOT-23-3 package variant. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor certificates before integration. Ensure the open-drain output type matches the target system's logic requirements. Check for obsolescence notices as this series may have limited availability from original sources.

Selection Notes

Select this component when a fixed 4.38 V reset threshold is required for single-supply monitoring. The ultra-low quiescent current makes it ideal for battery-operated devices where standby power conservation is critical. The open-drain output allows for flexible interfacing with various logic families. Ensure the application environment stays within the specified -40°C to +85°C temperature range for reliable operation.

Part Context

This part belongs to the MAX6348 family of micropower reset circuits. The family offers various threshold voltages and package options to suit different design constraints. The UR44 suffix specifically denotes the 4.38 V threshold version in the SOT-23-3 package. These circuits are designed to provide reliable reset signals for digital systems under varying power conditions.

Replacement Considerations

Check for direct pin-compatible alternatives within the MAX6348 series that offer similar threshold voltages. Verify if newer generations from Analog Devices provide improved specifications while maintaining functional compatibility.