MAX6348UR40+T

Overview

The MAX6348UR40+T is a 3-pin, ultra-low-power microprocessor reset 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 4.0 V for monitoring input lines. The device provides an active low, open-drain output with a typical reset delay time of 280 ms. Designed for surface mount applications, it is available in SOT-23-3 packages. The component draws only 500 nA of operating supply current, ensuring minimal power consumption during standby or active states.

Feature Summary

• Ultra-low power consumption with 500 nA operating current
• Fixed 4.0 V threshold voltage for precise monitoring
• Active low, open-drain output configuration
• Compact 3-pin SOT-23-3 surface mount package

Applications

• Portable battery-powered electronic devices
• Embedded systems requiring low quiescent current
• Microprocessor reset circuits in compact form factors

Procurement Notes

Verify the exact suffix (+T) indicates tape and reel packaging when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the specific lot date code meets project requirements. Cross-reference the part number with authorized distributors to avoid counterfeit components. Validate that the 4.0 V threshold aligns with the target system's voltage monitoring needs.

Selection Notes

Select this component when system design demands minimal standby current alongside a fixed 4.0 V reset threshold. It is suitable for applications where external components must be minimized due to space constraints. Consider the 280 ms delay time against system startup requirements. Evaluate the SOT-23-3 package size against available PCB real estate. Ensure the 5.5 V maximum operating voltage covers the highest expected supply rail.

Part Context

This part belongs to the MAX6348 series of supervisory circuits designed for low-power applications. The series offers various threshold voltages and package options to suit different monitoring requirements. As a product of Maxim Integrated, now part of Analog Devices, it adheres to established standards for reliability and performance in consumer and industrial electronics.

Replacement Considerations

Check for other MAX6348 variants with different threshold voltages if 4.0 V is unsuitable. Verify pinout compatibility with existing footprints before substituting. Review datasheets for any changes in reset delay times or leakage currents across different manufacturers.