MAX6348UR45-T

Overview

The MAX6348UR45-T is a voltage supervisory circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It operates within a supply voltage range up to 5.5 V and features an overvoltage threshold of 4.567 V. The device draws a typical operating supply current of 500 nA and dissipates up to 320 mW of power. It provides an active low, open-drain output with a reset delay time of 280 ms. The component is housed in a SOT-23-3 package and functions without manual reset or watchdog timer capabilities.

Feature Summary

• Ultra-low-power consumption suitable for battery-operated systems
• Active low open-drain output for direct microprocessor interfacing
• Compact three-pin surface-mount packaging

Applications

• Portable electronic devices requiring voltage monitoring
• Battery-powered instrumentation systems
• Embedded controller supervision circuits

Procurement Notes

Verify the exact suffix designation when ordering, as variations such as +T indicate specific tape-and-reel packaging configurations. Confirm availability status directly with authorized distributors, as this part may be subject to limited supply or obsolescence. Ensure the selected variant matches the required overvoltage threshold and package type for your specific design implementation.

Selection Notes

Select this component when a low-quiescent-current supervisor is needed for single-voltage monitoring applications. The open-drain output requires an external pull-up resistor. Consider the 280 ms reset delay and 4.567 V overvoltage threshold against system timing requirements. Verify that the SOT-23-3 footprint fits the PCB layout constraints.

Part Context

This part belongs to the MAX6348 series of uPower Reset Circuits designed for ultra-low-power applications. The series offers various fixed threshold voltages and packaging options to accommodate different system voltage levels and space limitations. These supervisors are engineered to provide reliable reset signals for digital logic and microprocessors.

Replacement Considerations

Check for MAX6348 variants with compatible thresholds. Some listings indicate MAX6348UR45+T as the primary equivalent. Verify pinout compatibility and electrical specifications before substitution.