MAX6337US24D3-T

Overview

The MAX6337US24D3-T is a microprocessor supervisory 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 2.40 V with an accuracy of 1.8%. The device provides an active-low, open-drain output with a reset timeout of 100 ms minimum. It consumes 3.3 µA of quiescent current and functions across an industrial temperature range from -40°C to +125°C. Packaged in a surface-mount SOT-143-4 case, it lacks manual reset, watchdog timer, or battery backup switching capabilities.

Feature Summary

• Ultra-low-voltage operation suitable for 1.8V–3.3V digital systems
• Open-drain output configuration for flexible interfacing
• High accuracy voltage monitoring with 1.8% tolerance

Applications

• Microprocessor power supply monitoring
• Battery-powered portable devices
• Embedded system voltage supervision

Procurement Notes

Verify component authenticity through authorized distributors due to discontinuation status. Confirm package integrity and RoHS compliance via official documentation. Cross-reference the full part number including suffixes to ensure correct threshold and package specifications. Request test reports if available from suppliers. Validate lead times as availability may be limited.

Selection Notes

Select this component when an open-drain supervisor is required for low-voltage logic interfaces. Ensure the 2.40 V threshold aligns with the monitored rail's minimum operating voltage. Consider the 100 ms timeout duration against system startup requirements. Verify that the absence of manual reset functionality meets design constraints.

Part Context

This part belongs to the MAX6337 series of ultra-low-voltage supervisors. It shares family characteristics such as low quiescent current and high accuracy but differs in specific threshold voltages and package options. The US24 suffix indicates the 2.40 V threshold and SOT-143-4 package variant.

Replacement Considerations

Check for MAX6337 variants with different thresholds or packages. Verify compatibility with existing PCB footprint and electrical parameters before substitution.