MAX9043BEUB+

Overview

The MAX9043BEUB+ is a dual-channel micropower analog comparator with an integrated precision voltage reference, manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single supply voltage ranging from 2.5V to 5.5V and consumes only 55µA of quiescent supply current. The device features rail-to-rail inputs and outputs, with a common-mode input range extending 250mV beyond the supply rails. It includes internal hysteresis for clean switching and offers a fixed 2.048V reference output with B-grade accuracy.

Feature Summary

• Dual comparators combined with a precision voltage reference in a compact package
• Rail-to-rail input and output stages capable of sinking and sourcing up to 8mA
• Internal ±3mV hysteresis ensures stable switching for slow-moving signals
• Low supply current consumption optimized for battery-operated systems

Applications

• Precision Battery Management
• Window Comparators
• IR Receivers
• Level Translators
• Digital Line Receivers

Procurement Notes

Verify the specific suffix 'B' indicates the B-grade initial accuracy (1%) and temperature coefficient (100ppm/°C) rather than the A-grade specifications. Confirm the 'EUB+' designation corresponds to the 10-pin uMAX/uSOP package and lead-free/RoHS compliance status as defined in the manufacturer's ordering guide before finalizing procurement.

Selection Notes

Select this component when dual independent comparison channels are required alongside a stable voltage reference within a small footprint. It is suitable for applications demanding low power consumption under dynamic conditions and rail-to-rail signal compatibility. Ensure the system operates within the specified 2.5V to 5.5V single-supply range and requires the B-grade reference accuracy.

Part Context

This part belongs to the MAX9038–MAX9043 family of micropower, single-supply comparator and precision reference ICs. These devices are designed for low-voltage operation, making them ideal for portable and battery-powered electronics. The family integrates CMOS comparators with laser-trimmed thin-film resistors for high-precision voltage referencing.

Replacement Considerations

Direct substitutes include other parts from the MAX9038–MAX9043 series with compatible pinouts and electrical characteristics, such as the MAX9043AEUB+ or variants with different grade suffixes, provided the package type and reference voltage match the design requirements.