MAX6346UR44-T

Overview

The MAX6346UR44+T is a voltage supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range 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, push-pull output with a minimum reset timeout of 100 ms. It is housed in a compact SOT-23-3 package suitable for surface mount installation. The component functions reliably across an operating temperature range from -40°C to +85°C.

Feature Summary

• Provides automatic power-on reset and manual reset functionality via simple supervisor architecture
• Delivers active low push-pull output signal for direct interface with digital logic systems
• Operates with ultra-low quiescent current consumption to extend battery life in portable applications

Applications

• Portable electronic devices requiring efficient power management
• Battery-operated equipment needing reliable voltage supervision
• Embedded systems utilizing microcontrollers or DSPs

Procurement Notes

Verify the exact part number suffix against official manufacturer documentation to ensure correct threshold voltage and package configuration. Confirm RoHS compliance status and lead times through authorized distributors. Check for obsolescence notices or lifecycle changes before finalizing procurement plans.

Selection Notes

Select this component when a fixed 4.38 V threshold is required for system supervision. Ensure the SOT-23-3 package fits the board layout constraints. Verify that the active low push-pull output drives the connected load without exceeding specifications. Consider thermal performance within the specified operating temperature range.

Part Context

This part belongs to the MAX6346 series of micropower reset circuits designed for low-voltage digital systems. It offers a balance of low power consumption and precise voltage monitoring. The series supports various threshold voltages and packages to accommodate different design requirements.

Replacement Considerations

Consult official substitution guides for compatible parts with matching thresholds and packages. Verify electrical characteristics and pinout compatibility before replacing.