MAX6348XR44

Overview

The MAX6348XR44+T is a voltage supervisory circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It operates within a supply voltage range of 1.2 V to 5.5 V and features a fixed threshold voltage of 4.4 V for monitoring single inputs. The device provides an active-low, open-drain reset output with a standard reset delay time of 185 ms. It exhibits high accuracy of 2.5% and consumes only 1 µA of supply current. The component is housed in a compact SC-70-3L package and supports surface-mount installation. It functions reliably across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Ultra-low power consumption with 1 µA supply current
• Fixed 4.4 V threshold voltage for precise monitoring
• Active-low open-drain reset output configuration
• Compact SC-70-3L surface-mount packaging

Applications

• Portable battery-powered equipment
• Microprocessor system supervision
• Consumer electronics power management
• Industrial control systems

Procurement Notes

Verify the exact suffix (+T) against official datasheets to confirm reel packaging specifications. Confirm RoHS compliance status through manufacturer documentation. Ensure the SC-70-3L footprint matches your PCB design requirements. Check for obsolescence or limited availability notices directly from Analog Devices. Validate that the 4.4 V threshold aligns with your specific voltage rail monitoring needs.

Selection Notes

Select this component when a fixed 4.4 V threshold is required for single-supply monitoring. Consider the 1 µA quiescent current for battery-sensitive designs. The SC-70-3L package suits space-constrained applications. Verify compatibility with the active-low open-drain output interface. Ensure the 185 ms reset delay meets system timing constraints during power-up sequences.

Part Context

The MAX6348 series belongs to Analog Devices' portfolio of ultra-low-power microprocessor reset circuits. These devices are designed to monitor voltage rails in portable and industrial applications. The XR44 variant specifically denotes the 4.4 V threshold option within the MAX6348 family. This series emphasizes minimal power consumption while maintaining reliable reset generation for sensitive digital logic.

Replacement Considerations

MAX6348UR44+T: Alternative package (SOT-23-3) with identical electrical characteristics.