74LS74
簡介74LS74是一顆Dual D-Type Postive-Edge-Triggered Filp-Flops With Preset And Clear 的IC。
簡圖
功能表
| INPUTS | OUTPUTS | ||||
| PR | CL | CLK | D | Q | Q' |
| 1 | X | 1 | 0 | ||
| 1 | X | 0 | 1 | ||
| 0 | 0 | X | X | 1 | 1 |
| 1 | 1 |  |
1 | 1 | 0 |
| 1 | 1 | |
0 | 0 | 1 |
| 1 | 1 | 0 | X | No change | |
74LS74
簡介
74LS74是一顆Dual D-Type Postive-Edge-Triggered Filp-Flops With Preset And Clear 的IC。簡圖
功能表
INPUTS OUTPUTS PR CL CLK D Q Q' 0 1 X X 1 0 1 0 X X 0 1 0 0 X X 1 1 1 1 1 1 0 1 1 0 0 1 1 1 0 X No change