DM74LS191 series datasheets. Manufacturer: Fairchild Semiconductor.

DM74LS191M Synchronous 4-Bit Up/Down Counter With Mode Control in 16-pin SOIC package. Datasheet*) DM74LS191MX Synchronous 4-Bit Up/Down Counter With Mode Control in 16-pin SOIC package. Datasheet*) DM74LS191N Synchronous 4-Bit Up/Down Counter With Mode Control in 16-pin MDIP package. Datasheet*) 74191 Synchronous 4-Bit Up/Down Counter with Mode Control Datasheet*) 74LS191 Synchronous 4-Bit Up/Down Counter with Mode Control Datasheet*) DM74LS191 Synchronous 4-Bit Up/Down Counter with Mode Control Datasheet*) There are other manufacturers for this components. For more information please check DM74LS191 (National Semiconductor)

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