LTC1445CS#TRPBF

Overview

The LTC1445CS#TRPBF is an ultralow power quad comparator with a built-in reference, manufactured by Analog Devices Inc. It operates from a single 2V to 11V supply or a dual ±1V to ±5.5V supply. The device features less than 8.5µA supply current over temperature and includes an internal 1.221V ±1% reference. It offers programmable hysteresis via the HYST pin and TTL/CMOS compatible outputs that sink and source current. Each comparator input operates from the negative supply to within 1.3V of the positive supply.

Feature Summary

• Ultralow quiescent current consumption
• Built-in precision voltage reference
• Programmable hysteresis capability
• TTL/CMOS compatible output stage

Applications

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

Procurement Notes

Verify the specific package type (SOIC-16) and temperature grade (Commercial, 0°C to 70°C) against project requirements. Confirm the ordering suffix matches the desired tape and reel configuration. Ensure compatibility with existing PCB footprints for the 16-lead plastic SO package before finalizing procurement.

Selection Notes

Select this component when low power consumption is critical alongside precise threshold detection. The integrated reference eliminates external resistor networks for biasing. Consider the LTC1445 over other comparators if programmable hysteresis and high output drive current are required without increasing quiescent power draw significantly.

Part Context

This part belongs to the LTC1443/LTC1444/LTC1445 family of micropower comparators. While sharing similar core architecture, the LTC1445 specifically provides a 1.221V reference and CMOS outputs, distinguishing it from the LTC1443's open-drain outputs and different reference voltage. It serves as a versatile solution for multi-supply level detection in portable electronics.

Replacement Considerations

Public confirmed substitute part numbers: None identified.