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參數資料
| 型號： | 74LS257 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | TRI-STATE Quad 2-Data Selectors/Multiplexers |
| 中文描述： | 三態四2，數據選擇器/多路復用器 |
| 文件頁數： | 6/6頁 |
| 文件大小： | 69K |
| 代理商： | 74LS257 |
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