The LM211, LM311 are voltage comparators that have low input currents. They are also designed to operate over a wide range of supply voltages: from standard ±15 V operational amplifier supplies down to the single +5 V supply used for IC logic. Their output is compatible with RTL-DTL and TTL as well as MOS circuits and can switch voltages up to +50 V at output currents as high as 50 mA. https://elecena.pl/product/17005500/lm311d-voltage-comparator-with-strobe 2020-07-04 https://elecena.pl/product/17005500/lm311d-voltage-comparator-with-strobe 2021-04-01 https://elecena.pl/product/17005500/lm311d-voltage-comparator-with-strobe 2021-04-18 https://elecena.pl/product/17005500/lm311d-voltage-comparator-with-strobe 2021-07-15 https://elecena.pl/product/17005500/lm311d-voltage-comparator-with-strobe 2021-12-06 https://elecena.pl/product/17005500/lm311d-voltage-comparator-with-strobe 2022-04-09 https://elecena.pl/product/17005500/lm311d-voltage-comparator-with-strobe 2022-06-11 https://elecena.pl/product/17005500/lm311d-voltage-comparator-with-strobe 2022-06-23 https://elecena.pl/product/17005500/lm311d-voltage-comparator-with-strobe 2022-07-05 https://elecena.pl/product/17005500/lm311d-voltage-comparator-with-strobe 2024-02-14 https://elecena.pl/product/17005500/lm311d-voltage-comparator-with-strobe 2024-11-15 https://elecena.pl/product/17005500/lm311d-voltage-comparator-with-strobe 2025-01-17 https://elecena.pl/product/17005500/lm311d-voltage-comparator-with-strobe 2025-01-26 https://elecena.pl/product/17005500/lm311d-voltage-comparator-with-strobe 2026-01-16 https://elecena.pl/product/17005500/lm311d-voltage-comparator-with-strobe 2026-03-13