LTC1442CN8#PBF

Overview

The LTC1442CN8#PBF is a dual ultralow power comparator with an integrated 1.182V reference, housed in an 8-lead SOIC package. It operates on a single supply from 2V to 11V or a dual supply of ±1V to ±5.5V. The device features programmable hysteresis via the HYST pin and CMOS outputs capable of sourcing up to 40mA. Supply current is typically 3.5µA at 5V. Input common mode range extends from V– to V+ – 1.3V.

Feature Summary

• Dual comparators with integrated 1.182V bandgap reference
• Programmable hysteresis using external resistors connected to the HYST pin
• CMOS output stage capable of continuous 40mA source current
• Elimination of crowbar switching currents during logic state transitions

Applications

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

Procurement Notes

Verify the specific suffix CN8 corresponds to the 8-lead plastic small outline (SO) package and commercial temperature grade. Confirm #PBF indicates lead-free status compliant with RoHS directives. Ensure the ordering number matches the dual comparator configuration rather than the single-channel variants within the family.

Selection Notes

Select this component when dual channel comparison with a built-in reference is required without external voltage sources. The LTC1442 is suitable for applications needing adjustable hysteresis and high output drive capability while maintaining microampere quiescent currents. Consider input common mode limits relative to the positive supply rail.

Part Context

This part belongs to the LTC1440/LTC1441/LTC1442 family of micropower comparators. While the LTC1440 offers single-channel operation with a dedicated ground pin for split supplies, and the LTC1441 provides dual channels without a reference, the LTC1442 combines dual comparators with the internal 1.182V reference and programmable hysteresis feature.

Replacement Considerations

Pin-compatible upgrades include the MAX921, MAX922, and MAX923 series comparators.