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fTC74HC190AP/AF J TC74HC191AP/AF
TC74HC190AP/AF T C 7 4 HC 1 9 1 A P / A F
The CMOS They TC 74HC 190A 4 - B IT
BCD U P / D O W N C O U N T E R 4 - B IT B IN A R Y UP/DOWN COUNTER
and TC74HC 191A
