LTC1445IDHD#TRPBF

Overview

The LTC1445IDHD#TRPBF is an ultralow power quad comparator with a built-in reference, housed in a 16-lead (5mm × 4mm) plastic DFN package. It operates from a single 2V to 11V supply or dual ±1V to ±5.5V supply. The device features TTL/CMOS compatible outputs that sink and source current, with continuous sourcing up to 40mA. It includes programmable hysteresis via the HYST pin and an internal reference voltage of 1.221V ±1%. Supply current is less than 8.5µA over temperature.

Feature Summary

• Ultralow quiescent current consumption
• Programmable hysteresis capability
• TTL/CMOS compatible output stage
• Internal bandgap voltage reference

Applications

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

Procurement Notes

Verify the specific ordering suffix matches the required temperature grade and packaging format. Confirm the manufacturer part number corresponds exactly to the requested component specifications. Ensure compliance with relevant environmental standards before finalizing procurement orders for production integration.

Selection Notes

Select this component when low power consumption is critical alongside precise threshold detection. The integrated reference eliminates external resistor networks for basic applications. Verify input common mode range requirements against the supply voltage rails. Consider the exposed pad connection for thermal management in dense layouts.

Part Context

This part belongs to the LTC1443/LTC1444/LTC1445 family of micropower comparators. While sharing similar core architecture, the LTC1445 specifically provides TTL/CMOS outputs and adjustable hysteresis, distinguishing it from the open-drain LTC1444 and ground-referenced LTC1443 variants within the same package lineup.

Replacement Considerations

LTC1445IS#TRPBF serves as a direct pin-compatible upgrade option offering industrial temperature range specifications compared to commercial grade alternatives.