MAX9039BEBT-T

Overview

The MAX9039BEBT+T is a micropower, single-supply analog comparator integrated with a precision voltage reference. It operates within a supply voltage range of 2.5V to 5.5V and consumes only 40μA of quiescent current. The device features a single comparator with rail-to-rail inputs and outputs, capable of sinking and sourcing up to 8mA. It includes an internal ±3mV hysteresis mechanism and delivers a fixed 1.23V reference output. The component is housed in a compact 6-pin UCSP package and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Integrates a low-power comparator with a precision voltage reference in a minimal footprint
• Features rail-to-rail input and output stages for maximum signal swing capability
• Includes internal hysteresis to ensure clean switching transitions on slow-moving signals
• Utilizes a unique output stage design that minimizes supply current surges during switching

Applications

• Precision battery management systems
• Window comparator circuits
• IR receiver front-ends
• Level translators
• Digital line receivers

Procurement Notes

Verify the specific suffix against official documentation to confirm package type and temperature grade. Ensure the ordering code matches the required lead-free status and RoHS compliance specifications. Confirm availability through authorized distributors as stock levels fluctuate. Cross-reference the datasheet revision date to ensure compatibility with current manufacturing standards.

Selection Notes

Select this component when designing battery-operated systems requiring both voltage monitoring and a stable reference source. The low 40μA supply current makes it suitable for power-constrained applications. Choose this part over dual-comparator variants if only a single comparison channel is needed. Verify that the 1.23V reference output aligns with the system's threshold requirements.

Part Context

This device belongs to the MAX9038–MAX9043 and MAX9050–MAX9053 family of micropower comparators. These ICs combine low-voltage comparators with precision references to simplify circuit designs. The MAX9039 specifically offers a single comparator configuration with a 1.23V reference, distinguishing it from dual-channel or different reference voltage variants within the same series.

Replacement Considerations

The MAX9038 serves as a functional substitute with an open-drain output instead of push-pull. Other family members like the MAX9040 provide a 2.048V reference but differ in pinout and reference voltage. Verify pin compatibility and reference voltage alignment before substituting.