MAX9040BEUK+T

Overview

The MAX9040BEUK+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 rail-to-rail inputs and outputs, with an internal hysteresis of ±3mV. The B-grade reference provides a nominal output voltage of 2.048V with 1% initial accuracy and a temperature coefficient of 100ppm/°C. It utilizes a 5-pin SOT-23 package.

Feature Summary

• Integrates a single low-power comparator with a precision voltage reference in a compact footprint.
• Features rail-to-rail input and output stages capable of sinking and sourcing up to 8mA.
• Includes internal ±3mV hysteresis to ensure clean switching for slow-moving signals.
• Output stage design minimizes supply current surges during transitions to reduce power glitches.

Applications

• Precision battery management systems
• Window comparator circuits
• IR receivers
• Level translators

Procurement Notes

Verify the specific suffix 'BEUK+T' against the manufacturer's official ordering guide to confirm the B-grade reference accuracy (1%) and SOT-23 packaging. Ensure the component meets RoHS compliance requirements indicated by the plus sign. Confirm availability status as distribution channels may vary.

Selection Notes

Select this component when a single-channel comparator with a fixed 2.048V reference is required in space-constrained designs. The B-grade specification offers lower accuracy than the A-grade variant but maintains the same low power consumption profile suitable for battery-operated applications requiring minimal supply current.

Part Context

This part belongs to the MAX9038–MAX9043/MAX9050–MAX9053 family of micropower comparators with precision references. These devices are designed for low-voltage, single-supply operation, combining high-performance comparison capabilities with stable voltage referencing in small surface-mount packages like SOT-23 and UCSP.

Replacement Considerations

The MAX9040AEUK+T serves as a direct functional substitute within the same package, offering higher reference accuracy (0.4% vs 1%). Other family members such as the MAX9041 or MAX9050 series provide similar architectures but differ in reference voltage values or pin configurations.