MAX9117ESA+T

Overview

The MAX9117ESA+T is a single-channel nanopower comparator from the MAX9117–MAX9120 family, housed in an 8-pin SO package. It features Beyond-the-Rails inputs and operates down to +1.6V supply voltage. The device includes an internal 1.252V ±1.75% reference and draws 600nA of supply current. It utilizes a CMOS push-pull output stage capable of sourcing and sinking up to 5mA with rail-to-rail swing. Input bias current is typically 0.15nA, and it offers internal hysteresis for clean switching.

Feature Summary

• Features Beyond-the-Rails input capability extending 200mV beyond supply rails
• Includes an onboard 1.252V reference with ultra-low 600nA supply current consumption
• Employs a unique crowbar-current-free output stage to minimize supply glitches
• Provides CMOS push-pull output with large internal drivers for rail-to-rail swing

Applications

• Two-cell battery monitoring and management systems
• Ultra-low-power mobile communications devices
• Threshold detectors and discriminators
• Sensing applications at ground or supply lines
• Telemetry and remote sensing systems

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and RoHS compliance status. Confirm availability through authorized distributors as supply conditions may vary. Ensure the component matches the required pinout and electrical specifications for the target application before procurement.

Selection Notes

Select this component when low-voltage operation down to 1.6V is required alongside minimal power consumption. Choose the MAX9117 variant specifically for its integrated reference voltage and push-pull output drive capability. Consider alternative models within the family if open-drain outputs or external reference configurations are preferred.

Part Context

This part belongs to the MAX9117–MAX9120 series of nanopower comparators designed for space-constrained applications. While other variants utilize SC70 packages, this specific model uses an 8-pin SO package. The series is engineered for battery-powered environments where minimizing quiescent current and preventing supply noise during switching are critical design requirements.

Replacement Considerations

Direct replacements include other members of the MAX9117–MAX9120 family such as the MAX9118ESA+, which shares the same package but features an open-drain output instead of push-pull. Verify that any substitute maintains the required Beyond-the-Rails input range and operating voltage specifications.