MAX9042BESA+T

Overview

The MAX9042BESA+T is a micropower, single-supply comparator integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. It features two comparators and one precision voltage reference within an 8-pin SOIC package. The device operates on a supply voltage range of 2.5V to 5.5V with a typical quiescent current of 55µA at 2.7V. The internal voltage reference provides a fixed output of 2.048V. Comparator inputs support rail-to-rail operation with a common-mode range extending 250mV beyond the supply rails. The push-pull outputs can sink and source up to 8mA, ensuring compatibility with TTL logic levels.

Feature Summary

• Integrates dual comparators with a precision voltage reference in a compact surface-mount package
• Features rail-to-rail input and output stages for wide dynamic signal handling
• Includes internal hysteresis to ensure clean switching transitions with slow-moving signals
• Utilizes a unique output stage design that minimizes supply current surges during switching

Applications

• Precision battery management systems
• Window comparator circuits
• Infrared (IR) receivers
• Level translators
• Digital line receivers

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm RoHS compliance status as indicated by the plus suffix. Check manufacturing date codes against current lifecycle status, noting potential obsolescence or discontinuation notices from the manufacturer. Ensure storage conditions adhere to moisture sensitivity level requirements prior to soldering.

Selection Notes

Select this component when dual independent comparison functions are required alongside a stable internal voltage reference. The low supply current makes it suitable for battery-operated applications where power efficiency is critical. Verify that the 2.048V reference voltage meets system threshold requirements. Ensure the 8-SOIC package dimensions fit the available PCB footprint constraints.

Part Context

This part belongs to the MAX9038–MAX9043 series of micropower comparators with precision references. It shares architectural similarities with single-comparator variants like the MAX9041 but offers dual-channel functionality. The device is designed for low-voltage digital and analog signal processing tasks requiring high accuracy and minimal power consumption in portable electronics.

Replacement Considerations

Public confirmed substitute part numbers: MAX9042AEUA, MAX9042BEUA.