| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | SP3249 | Intelligent +3.0V to +5.5V RS-232 Transceivers | 131K |
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| 2 | SP3249 | Intelligent +3.0V to +5.5V RS-232 Transceivers | 131K |
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| 3 | SP3249E | Intelligent +3.0V to +5.5V RS-232 Transceivers | 131K |
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| 4 | SP3249ECA | Intelligent +3.0V to +5.5V RS-232 Transceivers | 131K |
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| 5 | SP3249ECY | Intelligent +3.0V to +5.5V RS-232 Transceivers | 131K |
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| 6 | SP3249EEA | Intelligent +3.0V to +5.5V RS-232 Transceivers | 131K |
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| 7 | SP3249EEY | Intelligent +3.0V to +5.5V RS-232 Transceivers | 131K |
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