MAX6347UR44

Overview

The MAX6347UR44 is a supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated, designed for monitoring single voltage inputs. It operates within a supply voltage range up to 5.5 V and features a threshold voltage of 4.38 V. The device utilizes an SOT-23-3 package with surface mount installation. It provides an active low push-pull output and includes a minimum reset timeout of 100 ms. The component functions across a temperature range of -40°C to +85°C.

Feature Summary

• Provides automatic power-supply supervision with a fixed threshold voltage for reliable system reset generation.
• Features an active low push-pull output driver capable of directly interfacing with microprocessor reset pins.
• Designed for ultra-low-power operation suitable for battery-powered applications requiring minimal quiescent current.

Applications

• Microprocessor reset circuits in embedded systems
• Battery-operated portable devices requiring voltage supervision
• Industrial control systems needing reliable power monitoring

Procurement Notes

Verify the specific suffix (e.g., +T) for tape-and-reel packaging requirements. Confirm RoHS compliance status through official manufacturer documentation. Ensure the operating temperature range meets application environmental specifications. Cross-reference the exact part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when a fixed 4.38 V threshold is required for single-input voltage monitoring. Consider the SOT-23-3 package size for space-constrained designs. Verify that the active low push-pull output configuration matches the target controller's input requirements. Ensure the 100 ms reset timeout aligns with system startup timing constraints.

Part Context

This part belongs to the MAX6347 series of supervisory circuits from Maxim Integrated. It is part of a family of ultra-low-power reset ICs designed for general-purpose voltage monitoring. The series offers various threshold options and package types to suit different design needs.

Replacement Considerations

MAX6347UR44+T is a verified equivalent variant with identical electrical characteristics and RoHS compliance. Check for pin-compatible alternatives within the same series if different thresholds are needed.