几种D触发器集成电路器件 Number Flip-Flop Type Output Features 74 Dual D QQ Pre-set, Clear 174 Hex D Clear 71/175 Quad D QQ Clear Octal D Clear 374/377 Octal D Output enable 378 Hex D Output enable 379 Quad D QQ Output enable几种D 触发器集成电路器件 Number Flip-Flop Type Output Features ’74 Dual D Q Pre-set,Clear ‘174 Hex D Q Clear ‘171/’175 Quad D Q Clear ‘273 Octal D Q Clear ‘374/’377 Octal D Q Output enable ‘378 Hex D Q Output enable ‘379 Quad D Q Output enable Q Q Q