74LS90 series datasheets. Manufacturer: Motorola.

74LS90 DECADE COUNTER; DIVIDE-BY-TWELVE COUNTER; 4-BIT BINARY COUNTER Datasheet*) 74LS92 DECADE COUNTER; DIVIDE-BY-TWELVE COUNTER; 4-BIT BINARY COUNTER Datasheet*) 74LS93 DECADE COUNTER; DIVIDE-BY-TWELVE COUNTER; 4-BIT BINARY COUNTER Datasheet*) SN54LS90 DECADE COUNTER; DIVIDE-BY-TWELVE COUNTER; 4-BIT BINARY COUNTER Datasheet*) There are other manufacturers for this components. For more information please check 74LS90 (Fairchild Semiconductor) 74LS90 (National Semiconductor)

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