Synchronous Up/down Counters With Down/up Mode Control

  /ordering information The CD54/74HC190 are asynchronously presettable BCD decade Counters whereas the CD54 74HC191 and CD54 74HCT191 are asynchronously presettable binary Counters Presetting the Counter to the number on preset data inputs (A?D) is accomplished by a low asynchronous parallel load (LOAD) input. Counting occurs when LOAD is high, count enable (CTEN) is low, and the down/up (D/U) input is either high for down counting or low for up counting. The Counter is decremented or incremented synchronously with the low-to-high transition of the clock. ORDERING INFORMATION
Item: CD54HC190
File Size : 80 KB
Pages : 26 Pages

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Texas Instruments Incorporated
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