74F109 series datasheets. Manufacturer: National Semiconductor.

74F109PC Dual JK Positive Edge-Triggered Flip-Flop Datasheet*) 74F109SC Dual JK Positive Edge-Triggered Flip-Flop Datasheet*) 74F109SJ Dual JK Positive Edge-Triggered Flip-Flop Datasheet*) There are other manufacturers for this components. For more information please check 74F109 (Fairchild Semiconductor) 74F109 (Philips Semiconductors)

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