These devices consist of four independent voltage comparators that are designed to operate from a single power supply over a wide range of voltages. Operation from dual supplies also is possible as long as the difference between the two supplies is 2 V to 36 V, and VCC is at least 1.5 V more positive than the input common-mode voltage. Current drain is independent of the supply voltage. The outputs can be connected to other open-collector outputs to achieve wired-AND relationships. https://elecena.pl/product/9716173/lm239d-4-fold-differential-comparator-2-0-36v-so-14 2017-08-06 https://elecena.pl/product/9716173/lm239d-4-fold-differential-comparator-2-0-36v-so-14 2017-10-19 https://elecena.pl/product/9716173/lm239d-4-fold-differential-comparator-2-0-36v-so-14 2018-05-04 https://elecena.pl/product/9716173/lm239d-4-fold-differential-comparator-2-0-36v-so-14 2021-06-29 https://elecena.pl/product/9716173/lm239d-4-fold-differential-comparator-2-0-36v-so-14 2022-10-13 https://elecena.pl/product/9716173/lm239d-4-fold-differential-comparator-2-0-36v-so-14 2023-04-24 https://elecena.pl/product/9716173/lm239d-4-fold-differential-comparator-2-0-36v-so-14 2025-01-28 https://elecena.pl/product/9716173/lm239d-4-fold-differential-comparator-2-0-36v-so-14 2025-06-20 https://elecena.pl/product/9716173/lm239d-4-fold-differential-comparator-2-0-36v-so-14 2025-12-26 https://elecena.pl/product/9716173/lm239d-4-fold-differential-comparator-2-0-36v-so-14 2026-02-04 https://elecena.pl/product/9716173/lm239d-4-fold-differential-comparator-2-0-36v-so-14 2026-02-16