TSM9120EXK+T

Overview

The TSM9120EXK+T is a nanopower analog comparator from the TSM9117-TSM9120 family, manufactured by Silicon Laboratories. It operates on a supply voltage range of 1.6V to 5.5V with a typical supply current of 350nA at 1.6V and 450nA at 5V. The device features an open-drain output stage capable of sourcing up to 35mA short-circuit current. It includes internal hysteresis of 4mV and supports input voltages extending 200mV beyond the supply rails without phase reversal.

Feature Summary

• Ultra-low power consumption suitable for battery-operated systems
• Robust input stage tolerates voltages outside the supply rails
• Open-drain output facilitates logic level translation between different voltage domains
• Internal hysteresis ensures clean switching behavior

Applications

• Two-cell battery monitoring and management
• Logic-level translation between different voltage systems
• Zero-crossing detection circuits
• Threshold detectors and discriminators

Procurement Notes

Verify the specific ordering suffix EXK+T corresponds to the SC-70-5 package in tape and reel format. Confirm that the component is sourced from authorized distributors to ensure authenticity. Check for lead-free packaging compliance as standard for this product line. Review the datasheet for absolute maximum ratings to prevent damage during handling and installation.

Selection Notes

Select the TSM9120EXK+T when an open-drain output is required for wired-OR configurations or interfacing with different logic voltage levels. Choose this part over push-pull variants if system design necessitates external pull-up resistors. Ensure the application operates within the specified temperature range of -40°C to +85°C. Verify that the low supply current meets the power budget constraints of the target portable device.

Part Context

This component belongs to the TSM9117-TSM9120 series of nanopower comparators designed for low-voltage applications. It is electrically and form-factor identical to the MAX9117-MAX9120 family. The series offers options with and without internal voltage references, catering to various precision and cost requirements in portable electronics and sensor interfaces.

Replacement Considerations

The TSM9120EXK+T is a second-source equivalent to the Maxim Integrated MAX9120. When substituting, verify pin compatibility and electrical characteristics such as supply current and offset voltage. Ensure the replacement maintains the open-drain output configuration and operating voltage range.