MAX6337US22D2+T

Overview

The MAX6337US22D2+T is a microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of up to 5.5V and features a fixed threshold voltage of 2.3V. The device provides an active low, open-drain reset output with a minimum reset timeout of 150ms. It includes a debounced manual reset input for system control. The component is housed in a SOT-143-4 surface-mount package and supports an operating temperature range from -40°C to +125°C.

Feature Summary

• Monitors power supply voltage to ensure reliable microprocessor operation
• Features a debounced manual reset input for user-initiated system resets
• Provides an active low open-drain reset signal output

Applications

• Microprocessor (µP) systems requiring voltage supervision
• Digital systems needing power-on reset functionality
• Battery-powered devices requiring low-power monitoring

Procurement Notes

Verify the exact suffix D2+T against the manufacturer's current datasheet to confirm pinout and electrical specifications. Confirm RoHS compliance status as indicated in official documentation. Check for obsolescence notices or lifecycle changes directly from Analog Devices. Ensure the SOT-143-4 package matches your PCB footprint requirements before procurement.

Selection Notes

Select this component when a fixed 2.3V threshold is required for low-voltage digital systems. The open-drain output allows for flexible interfacing with various logic levels. Consider the 150ms timeout duration to ensure compatibility with the target microprocessor's startup sequence. Verify that the manual reset feature aligns with the system's safety requirements.

Part Context

This part belongs to the MAX6335/MAX6336/MAX6337 family of ultra-low-voltage, low-power µP reset circuits. These devices are designed to increase circuit reliability by eliminating external components and adjustments. They perform a single function: asserting a reset signal whenever the VCC supply voltage declines below a preset threshold or when the manual reset input is activated.

Replacement Considerations

Consult the MAX6335, MAX6336, or other MAX6337 variants with different thresholds or output types if the 2.3V threshold or open-drain configuration does not match the design requirements. Verify pin compatibility and electrical characteristics before substituting.