IC, 74HCT74, Dual D-type flip-flop Part numberDatasheetFarnell: 1470823Texas, SN74HCT74N Mouser: 595-SN74HCT74NTexas, SN74HCT74N Mouser: 595-CD74HCT74E Texas, CD74HCT74E RS: 144-9905Texas, CD74HCT74E