74HC191 series datasheets. Manufacturer: Philips Semiconductors.

74HC191D Presettable synchronous 4-bit binary up/down counter Datasheet*) 74HC191DB Presettable synchronous 4-bit binary up/down counter Datasheet*) 74HC191N Presettable synchronous 4-bit binary up/down counter Datasheet*) 74HC191PW Presettable synchronous 4-bit binary up/down counter Datasheet*) 74HC191U Presettable synchronous 4-bit binary up/down counter Datasheet*) 74HCT191D Presettable synchronous 4-bit binary up/down counter Datasheet*) 74HCT191N Presettable synchronous 4-bit binary up/down counter Datasheet*) 74HCT191U Presettable synchronous 4-bit binary up/down counter Datasheet*) 74HC191 Presettable synchronous 4-bit binary up/down counter Datasheet*) 74HCT191 Presettable synchronous 4-bit binary up/down counter Datasheet*) There are other manufacturers for this components. For more information please check 74HC191 (Texas Instruments)

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