CD54/74HC192, CD54/74HC193, CD54/74HCT193 Data sh.
Texas Instruments
CD54HC193 - Presettable Synchronous 4-Bit Up/Down Counters
CD54/74HC192, CD54/74HC193, CD54/74HCT193 Data sheet acquired from Harris Semiconductor SCHS163F High-Speed CMOS Logic September 1997 - Revised Oct.
