DM74LS540 series datasheets. Manufacturer: National Semiconductor.

DM74LS540N 7 V, octal buffer/line driver with TRI-STATE output in 20-pin DIL package. Operational temperature range from 0°C to 70°C. Datasheet*) DM74LS540WM 7 V, octal buffer/line driver with TRI-STATE output in 20-pin DIL package. Operational temperature range from 0°C to 70°C. Datasheet*)

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