MAX6337US24D3

Overview

The MAX6337US24D3+T is a microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors power supply voltages in systems operating between 1.8V and 3.3V. The device features a debounced manual-reset input and asserts a reset signal when the VCC supply voltage declines below a preset threshold of 2.4V or upon activation of the manual reset. It utilizes an SOT-143-4 package with surface-mount installation. Key electrical parameters include a maximum supply voltage of 5.5V, a reset delay time of 150ms, and a typical operating current of 3.3µA. The accuracy is specified at 1.8%, with an overvoltage threshold of 2.34V. It operates within a temperature range of -40°C to +125°C.

Feature Summary

• Monitors power supply voltage and asserts reset when voltage drops below a preset threshold
• Features a debounced manual-reset input for user-initiated system resets
• Provides reliable circuit operation by eliminating external components and adjustments

Applications

• Microprocessor (µP) supervisory circuits
• Digital systems requiring power monitoring
• Low-voltage embedded applications

Procurement Notes

Verify the specific suffix D3 indicates the tape and reel packaging variant when ordering. Confirm the 2.4V threshold requirement matches the design specifications. Check RoHS compliance status as indicated in official documentation. Ensure the SOT-143-4 package footprint aligns with the PCB layout. Validate the operating temperature range suitability for the intended environment.

Selection Notes

Select this component for applications requiring ultra-low-voltage supervision with minimal quiescent current. The fixed 2.4V threshold suits 3.3V logic systems. Consider the manual reset feature if user intervention capability is needed. The SOT-143-4 package offers a compact solution for space-constrained designs. Verify compatibility with the system's power rail characteristics.

Part Context

This part belongs to the MAX6335/MAX6336/MAX6337 family of µP reset circuits. These devices are designed to increase circuit reliability and reduce cost in low-voltage digital systems. The family shares similar functionality but varies in threshold voltages and package options. The MAX6337 specifically targets applications needing precise supervision of 1.8V to 3.3V supplies.

Replacement Considerations

Public confirmed substitute part numbers: MAX6335US24D3+T, MAX6336US24D3+T.