LTC1443IS#TRPBF

Overview

The LTC1443IS#TRPBF is an ultralow power quad comparator with a built-in reference, housed in a 16-lead plastic SO package. It operates from a single 2V to 11V supply or dual ±1V to ±5.5V supply. The device features less than 8.5µA supply current over temperature, TTL/CMOS outputs capable of sourcing up to 40mA, and no crowbar current during state changes. Input common mode range extends from the negative supply to within 1.3V of the positive supply.

Feature Summary

• Ultralow quiescent current consumption
• Built-in voltage reference output
• TTL/CMOS compatible outputs
• Wide supply voltage range

Applications

• Battery-powered system monitoring
• Threshold detectors
• Window comparators
• Oscillator circuits

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm the IS designation corresponds to the industrial temperature range of –40°C to 85°C. Ensure the 16-lead Plastic SO package format matches the target PCB footprint requirements before finalizing procurement specifications.

Selection Notes

Select this component for applications requiring minimal static power draw while maintaining high drive capability. The integrated reference simplifies threshold setting compared to discrete solutions. Verify that the input signal levels remain within the specified common mode range relative to the chosen supply configuration.

Part Context

This part belongs to the LTC1443/LTC1444/LTC1445 family of micropower comparators. While the LTC1443 provides separate ground for split supplies, the LTC1444 offers programmable hysteresis, and the LTC1445 combines both features. All variants share the same low-power architecture and internal bandgap reference characteristics.

Replacement Considerations

Pin-compatible upgrades include the MAX924. Other family members like the LTC1444 or LTC1445 may be suitable if hysteresis functionality is required instead of the standard open-drain or push-pull outputs found in the base model.