MAX6389XS16D3+T

Overview

The MAX6389XS16D3+T is a single-channel, low-voltage microprocessor supervisory circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It monitors power-supply voltages ranging from +1.8V to +5.0V with a typical supply current of 3µA at +1.8V. The device features an adjustable reset threshold voltage of 1.58V and provides an active-low, open-drain reset output. It operates within a temperature range of -40°C to +125°C and is housed in a compact SC-70-4 package.

Feature Summary

• Monitors power-supply voltages from +1.8V to +5.0V while consuming only 3µA of supply current at +1.8V
• Features an adjustable reset threshold voltage of 1.58V for flexible system design
• Provides an active-low, open-drain reset output that asserts when VCC falls below the reset threshold

Applications

• Microprocessor (µP) supervisory circuits
• Low-voltage power management systems
• Battery-powered portable devices requiring low standby current

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status (+ suffix indicates lead-free). Check datasheet revision history for any updates to electrical characteristics or pinout configurations before finalizing procurement specifications.

Selection Notes

Select this part when a single-channel supervisor with an adjustable threshold is required. Ensure the application voltage stays within the 1.8V to 5.0V range. Consider the open-drain output type for compatibility with logic levels. Verify thermal requirements against the -40°C to +125°C operating range.

Part Context

Part of the MAX6381–MAX6390 family of SC70/µDFN single/dual low-voltage, low-power µP reset circuits. This specific model (MAX6389) denotes a single-channel variant with adjustable threshold capabilities, distinguishing it from fixed-threshold counterparts in the same series.

Replacement Considerations

Consult official Analog Devices documentation for confirmed substitute part numbers. Cross-reference with other MAX6389 variants if different threshold voltages or package types are needed. No generic substitutes should be assumed without verifying electrical parameter equivalence.