MAX9018BEKA/V+T

Overview

The MAX9018BEKA/V+T is a dual nanoPower comparator in an 8-pin SOT23 package. It features Beyond-the-Rails inputs and operates down to 1.8V with a supply current of 1.2µA at 5V. The B-grade variant includes an internal 1.24V ±1.75% reference. It has an open-drain output stage suitable for mixed-voltage systems, input offset voltage under 5mV, and internal 4mV hysteresis. Operating temperature range is -40°C to +85°C.

Feature Summary

• Dual precision comparators with integrated 1.24V reference
• Beyond-the-Rails input capability extending beyond supply rails
• Open-drain output stage designed for mixed-voltage logic compatibility
• Ultra-low power consumption optimized for battery-operated applications

Applications

• Two-cell battery monitoring and management
• Threshold detectors and discriminators
• Window detectors
• Sensing at ground or supply line
• Medical instruments and automotive electronics

Procurement Notes

Verify the specific suffix /V indicates AEC-Q100 Grade 3 qualification as documented in the ordering information. Confirm the B-grade designation corresponds to the 1.24V ±1.75% reference tolerance. Ensure the open-drain output configuration matches system requirements for pull-up resistors. Check RoHS compliance status associated with the plus sign in the part number.

Selection Notes

Select this component when low supply current is critical for battery life extension. Choose the open-drain output version if interfacing with logic levels exceeding the positive supply rail. Verify that the internal reference accuracy meets application thresholds. Consider the space-saving SOT23 package for compact designs requiring dual comparator functionality.

Part Context

This device belongs to the MAX9015–MAX9020 family of nanoPower comparators manufactured by Analog Devices/Maxim Integrated. The family shares common features like ultra-low supply current and Beyond-the-Rails inputs. Variations exist between single/dual channels, push-pull/open-drain outputs, and reference inclusion. The MAX9018 specifically provides dual channels with an internal reference and open-drain outputs.

Replacement Considerations

Consult the datasheet for industry second-source options or Maxim replacements. Verify pinout compatibility and electrical specifications before substitution. Ensure the replacement supports the required operating voltage range and temperature specifications.