MAX6338IUB

Overview

The MAX6338IUB+T is a quad voltage monitor from Analog Devices/Maxim Integrated, housed in a 10-pin uMAX package. It monitors four supply rails with factory-trimmed thresholds of 1.8 V, 2.5 V, 3.3 V, and 5 V. The device features active low open-drain outputs and operates within a 2.5 V to 5.5 V supply range. Quiescent current is 35 µA, with an operating temperature range of -40°C to +85°C.

Feature Summary

• Monitors up to four independent power supplies without external components
• Provides active low open-drain reset outputs for each monitored rail
• Factory-trimmed threshold voltages ensure precise supervision accuracy

Applications

• Portable equipment requiring multi-rail power monitoring
• Battery-powered systems with multiple voltage domains
• Embedded controllers needing simultaneous supply validation

Procurement Notes

Verify the suffix '+T' indicates tape-and-reel packaging when ordering. Confirm the 'I' grade corresponds to the industrial temperature range (-40°C to +85°C). Ensure the specific threshold combination (1.8V, 2.5V, 3.3V, 5V) matches the design requirements, as other variants exist with different fixed or adjustable thresholds.

Selection Notes

Select this variant specifically for its fixed 1.8V, 2.5V, 3.3V, and 5V thresholds. If adjustable monitoring is required, consider the G or O series instead. Verify that the open-drain output configuration aligns with the downstream logic interface. Check if manual reset functionality is needed, as this part lacks an MR pin.

Part Context

Part of the MAX6338 family of quad voltage supervisors. Designed for applications requiring compact footprints and high accuracy. Manufactured by Maxim Integrated, now part of Analog Devices Inc. The uMAX package offers a small form factor suitable for space-constrained designs.

Replacement Considerations

Direct substitutes include MAX6338GUB+T (adjustable/threshold mix) or MAX6338OUB+T (different threshold set). Cross-reference threshold values carefully as they vary significantly between suffixes.