HD74LS20 series datasheets. Manufacturer: Hitachi Semiconductor.

HD74LS20 Dual 4-input NAND Gates Datasheet*) HD74LS20 Single-chip microcomputer, ROM = 32 kbytes, RAM = 2 kbytes, 3V in 14-pin SOP package. Operational temperature range from -20°C to 75°C. Datasheet*) HD74LS20P Single-chip microcomputer, ROM = 32 kbytes, RAM = 2 kbytes, 3V in 14-pin DIP package. Operational temperature range from -20°C to 75°C. Datasheet*)

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