TSM9120EXK+

Overview

The TSM9120EXK+ is a nanopower analog comparator from the TSM9117-TSM9120 family, manufactured by Silicon Labs. It features an open-drain output and operates down to +1.6V with a supply current of 350nA. The device lacks an internal reference but includes 4mV internal hysteresis. Input voltage range extends 200mV outside the rails, ensuring no phase reversal for overdriven inputs. It is housed in a 5-pin SC-70 package.

Feature Summary

• Open-drain output stage suitable for different supply voltages
• Ultra-low supply current consumption
• Robust input stage tolerant beyond power supply rails
• Internal hysteresis for clean switching

Applications

• 2-cell battery monitoring/management
• Medical instruments
• Threshold detectors/discriminators
• Sensing at ground or supply line
• Logic-level translation between voltage systems

Procurement Notes

Verify component authenticity through authorized channels as this part may be subject to obsolescence notices. Confirm that the specific ordering suffix matches the required tape and reel packaging format. Ensure compatibility with existing PCB footprints for the 5-pin SC-70 package before finalizing procurement decisions.

Selection Notes

Select the TSM9120EXK+ when an open-drain output is required for wired-OR logic or level shifting applications. Choose this model over push-pull variants if interfacing with different supply voltage domains is necessary. Consider the ultra-low current draw for battery-powered designs where minimizing quiescent power consumption is critical.

Part Context

This component belongs to the TSM9117-TSM9120 series of nanopower comparators. It serves as a second-source equivalent to the MAX9117-MAX9120 family. The series is designed for low-voltage, low-power applications, offering form-factor and electrical identity across single, dual, and quad configurations within the same package types.

Replacement Considerations

The TSM9120EXK+ is electrically identical to the Maxim Integrated MAX9120. Designers can substitute this component with the MAX9120 without modifying circuit parameters or layout, provided the pinout and package dimensions are compatible.