| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
|---|
| 1 | 74LV257D | Quad 2-input multiplexer 3-State | 116K |
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| 2 | 74LV257DB | Quad 2-input multiplexer 3-State | 116K |
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| 3 | 74LV257DB-T | 2-Input Digital Multiplexer | 230K |
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| 4 | 74LV257D-T | 2-Input Digital Multiplexer | 230K |
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