LTC1441CS8#PBF

Overview

The LTC1441CS8#PBF is a dual ultralow power comparator from Analog Devices, housed in an 8-lead plastic Small Outline (SOIC) package. It operates on a single supply voltage ranging from 2V to 11V or a dual supply of ±1V to ±5.5V. The device features two independent comparators with TTL/CMOS compatible outputs capable of sourcing up to 40mA and sinking up to 5mA. Supply current is typically 3.5µA at 5V. Propagation delay is 8µs with 100mV overdrive. Input common mode range extends from the negative supply to within 1.3V of the positive supply.

Feature Summary

• Dual comparator architecture with CMOS outputs providing high drive capability
• Ultralow quiescent supply current for battery-powered applications
• Wide input common mode range extending to the negative supply rail
• Glitch-free output transitions eliminating crowbar switching currents

Applications

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

Procurement Notes

Verify the specific suffix CS8 corresponds to the commercial temperature grade and SOIC package variant required for your design. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure pinout compatibility with existing PCB layouts as the S8 package dimensions are standardized but should be cross-referenced with the latest datasheet drawings.

Selection Notes

Select this component when dual channel comparison is needed with minimal power consumption. The wide supply range supports both single and split supply architectures. Note that unlike the LTC1440, this model lacks a built-in reference and programmable hysteresis pins; external components must be used if these functions are required for the application logic.

Part Context

This part belongs to the LTC1440/LTC1441/LTC1442 family of micropower comparators. While sharing core low-power characteristics, the LTC1441 specifically provides two independent channels without internal references. It serves as a direct upgrade for legacy MAX921/922/923 designs, offering improved performance metrics while maintaining functional compatibility in standard comparator configurations.

Replacement Considerations

Pin-compatible upgrades include the MAX921 and MAX922 series. Verify electrical parameter alignment, particularly propagation delay and supply current, when substituting older discrete comparator solutions or previous generation ICs.