MAX6348UR46

Overview

The MAX6348UR46+T is a voltage supervisory circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It operates within a supply voltage range of 1V to 5.5V and features a fixed reset threshold of 4.63V with an accuracy of 1.5%. The device draws only 500nA of quiescent current and provides an active-low, open-drain output. It includes a 185ms reset delay timer and lacks manual reset or watchdog functions. Packaged in a compact SOT-23-3 format, it supports industrial temperatures from -40°C to +85°C.

Feature Summary

• Ultra-low power consumption with 500nA operating current
• Compact 3-pin surface-mount packaging options
• Active-low open-drain reset output signal
• Factory-set voltage threshold monitoring

Applications

• Portable battery-powered equipment
• Handheld instruments
• Wireless communication devices
• Microprocessor system supervision

Procurement Notes

Verify the specific suffix (e.g., UR46) against official datasheets to confirm the exact threshold voltage and package type. Ensure compatibility with the target PCB footprint for SOT-23-3 or SC-70-3 packages. Confirm RoHS compliance status through manufacturer documentation before integration into production designs.

Selection Notes

Select this component when ultra-low standby current is critical for battery life extension. The fixed 4.63V threshold suits systems requiring precise supervision of higher voltage rails. Consider the absence of manual reset inputs if hardware push-button recovery is not required by the system architecture.

Part Context

This part belongs to the MAX6348 family of microprocessor supervisory circuits designed for low-voltage applications. It offers a balance of minimal power draw and reliable voltage monitoring in small form factors suitable for space-constrained portable electronics.

Replacement Considerations

MAX6348XR46+T: Alternative package variant with identical electrical specifications.