74HCT74S   数据手册 ( 数据表 )

Fairchild Semiconductor

Dual D-Type Flip-Flop with Preset and Clear

Fairchild Semiconductor

Dual D-Type Flip-Flop with Preset and Clear

Motorola => Freescale

Dual D Flip-Flop with Set and Reset with LSTTL Compatible Inputs

STMicroelectronics

DUAL D TYPE FLIP FLOP WITH PRESET AND CLEAR

Integral Corp.

Dual D Flip-Flop with Set and Reset High-Performance Silicon-Gate CMOS

Fairchild Semiconductor

Dual D-Type Flip-Flop with Preset and Clear

System Logic Semiconductor

Dual D Flip-Flop with Set and Reset

ON Semiconductor

Dual D Flip-Flop with Set and Reset with LSTTL Compatible Inputs

Hitachi -> Renesas Electronics

Dual D–type Positive Edge–triggered Flip Flops with Clear and Preset

System Logic Semiconductor

Dual D Flip-Flop with Set and Reset

Kodenshi Auk Co., LTD

Dual D Flip-Flop with Set and Reset High-Performance Silicon-Gate CMOS