MAX6337US20D3+T

Overview

The MAX6337US20D3+T is a microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors a single power supply input with a threshold voltage of 2.0V and an overvoltage threshold of 2.04V. The device features an active-low, open-drain reset output and includes a manual reset function. It operates within a supply voltage range up to 5.5V and supports a minimum reset delay time of 150ms. The component is housed in a SOT-143-4 surface-mount package and functions reliably across a temperature range of -40°C to +125°C.

Feature Summary

• Monitors a single power supply rail for undervoltage and overvoltage conditions
• Features a debounced manual-reset input for user-initiated system resets
• Provides an active-low, open-drain reset signal output

Applications

• Microprocessor (µP) and digital system power supply monitoring
• Portable electronic devices requiring low-power supervision
• Battery-operated systems needing reliable voltage tracking

Procurement Notes

Verify the specific suffix D3 against official datasheets to confirm the 2.0V threshold and open-drain configuration. Confirm RoHS compliance status and check current availability as this part may be discontinued or subject to limited supply constraints from the manufacturer.

Selection Notes

Select this component when a single-channel supervisor with manual reset capability is required. Ensure the 2.0V threshold aligns with the target system voltage. Verify that the open-drain output interface is compatible with the downstream logic levels and pull-up requirements of the design.

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. They monitor VCC supplies in 1.8V to 3.3V systems and assert a reset signal when voltage declines below a preset threshold.

Replacement Considerations

Check for direct substitutes within the MAX633x series with matching thresholds and packages. Verify pinout compatibility before replacing.