LTC1441CN8#PBF

Overview

The LTC1441CN8#PBF is a micropower dual comparator with a built-in 1.182V reference, housed in an 8-lead PDIP package. It operates from a single 2V to 11V supply or a dual ±1V to ±5.5V supply. The device features a typical supply current of 3.5µA and a propagation delay of 12µs with 10mV overdrive. Inputs range from the negative supply to within 1.3V of the positive supply. Outputs are CMOS-compatible, capable of sourcing up to 40mA continuously.

Feature Summary

• Dual comparators with integrated 1.182V reference
• CMOS outputs capable of sourcing up to 40mA
• Eliminates crowbar switching currents during logic transitions
• Wide input common mode range extending to the negative supply

Applications

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

Procurement Notes

Verify the specific package type matches the required PCB footprint. Confirm that the operating temperature range aligns with the application environment. Ensure the supply voltage remains within the specified limits to maintain performance. Check for any pin compatibility requirements if upgrading from legacy parts.

Selection Notes

Select this component when low quiescent current is critical alongside moderate drive capability. The dual configuration allows for complex logic functions without additional components. Consider the output swing characteristics relative to the downstream logic levels. Verify that the internal reference meets the accuracy requirements for the threshold detection.

Part Context

This part belongs to the LTC1440/LTC1441/LTC1442 family of ultralow power comparators. While the LTC1440 offers adjustable hysteresis and the LTC1442 provides dual comparators with hysteresis, the LTC1441 focuses on dual comparator functionality with a fixed reference. All variants share similar electrical characteristics regarding supply current and input ranges.

Replacement Considerations

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