DM74LS645 series datasheets. Manufacturer: Fairchild Semiconductor.

DM74LS645N Octal 3-STATE Bus Transceiver in 20-pin MDIP package. Datasheet*) DM74LS645WM Octal 3-STATE Bus Transceiver in 20-pin SOIC package. Datasheet*) DM74LS645WMX Octal 3-STATE Bus Transceiver in 20-pin SOIC package. Datasheet*) There are other manufacturers for this components. For more information please check DM74LS645 (National Semiconductor)

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