This is the Texas Instruments SN74LS04 hex inverter IC from the 74LS family. This is part of a range of low power Schottky devices offering the same speed as standard TTL but at a fifth of the power consumption. * 7404 base number * 4.75 to 5.25V supply voltage * 10ns propagation delay * 0.4W power * 14-DIP * Operating temperature -20°C to +75°C https://elecena.pl/product/27173155/texas-instruments-sn74ls04n-hex-inverter-dil14 2024-11-08 https://elecena.pl/product/27173155/texas-instruments-sn74ls04n-hex-inverter-dil14 2025-03-30 https://elecena.pl/product/27173155/texas-instruments-sn74ls04n-hex-inverter-dil14 2025-05-15 https://elecena.pl/product/27173155/texas-instruments-sn74ls04n-hex-inverter-dil14 2026-03-31