MAX6348UR46+T

Overview

The MAX6348UR46+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 threshold voltage of 4.63 V with an accuracy of 1.5%. The device draws a working supply current of 500 nA and provides an active low, open drain output. It includes a reset delay time of 185 ms and functions without manual reset or watchdog timer capabilities. The component is housed in an SOT-23-3 package and supports operation temperatures from -40°C to +85°C.

Feature Summary

• Ultra-low power consumption with 500 nA operating current
• Active low open-drain output configuration
• Compact SOT-23-3 surface mount packaging

Applications

• Portable electronic devices requiring extended battery life
• Microprocessor system supervision
• Battery-powered instrumentation

Procurement Notes

Verify the specific suffix UR46 to confirm the 4.63 V threshold voltage, as the MAX6348 series offers multiple voltage options. Confirm RoHS compliance status through official documentation. Check for obsolescence notices or lifecycle changes directly from Analog Devices. Ensure the SOT-23-3 footprint matches your PCB design requirements before finalizing procurement.

Selection Notes

Select this component when a fixed 4.63 V monitoring threshold is required for systems powered by voltages up to 5.5 V. The ultra-low quiescent current makes it suitable for battery-operated applications where power efficiency is critical. Consider the open-drain output type for compatibility with logic levels. Verify that the 185 ms reset delay meets the system's startup timing requirements.

Part Context

This part belongs to the MAX6348 family of microprocessor reset circuits designed for low-power applications. The series typically offers various threshold voltages and packaging options to suit different design constraints. Analog Devices acquired Maxim Integrated, integrating these legacy parts into their broader portfolio of power management and signal processing solutions.

Replacement Considerations

Consider ADM6348 variants for pin-compatible alternatives from Analog Devices. Other MAX6348 models with different threshold suffixes may be used if voltage requirements differ. Verify electrical specifications and package dimensions before substitution.