LTC1442CS8#PBF

Overview

The LTC1442CS8#PBF is a dual-channel 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. Propagation delay is 12µs with 10mV overdrive. 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 sourcing up to 40mA without crowbar currents
• Wide input common mode range extending to within 1.3V of the positive supply

Applications

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

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance when ordering. Confirm the CS8 designation corresponds to the commercial temperature grade (0°C to 70°C) and the SOIC-8 package type. Ensure the design accounts for the dual-channel configuration and the availability of the internal reference voltage for biasing applications.

Selection Notes

Select this component for designs requiring low quiescent current and adjustable hysteresis in a compact surface-mount package. The dual-channel architecture allows for window comparator implementations without external references. Consider the 40mA source capability for direct driving of logic loads. Verify that the required propagation delay meets the timing constraints of the target application.

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, and the LTC1441 provides dual channels without a reference, the LTC1442 combines dual comparators with the built-in 1.182V reference. All variants share similar electrical characteristics regarding supply range and input/output specifications.

Replacement Considerations

Pin-compatible upgrades include the MAX921, MAX922, and MAX923 series. Other related parts in the family are the LTC1440 and LTC1441, which offer single-channel configurations.