| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | 54LS74 | Dual Positive-Edge-Triggered D Flip-Flops with Preset, Clear and Complementary Outputs | 139K |
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| 2 | 54LS74A | 54LS74A | 270K |
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| 3 | 54LS74DMQB | Dual Positive-Edge-Triggered D Flip-Flops with Preset, Clear and Complementary Outputs | 139K |
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| 4 | 54LS74FM | Dual D-Type Flip-Flop | 115K |
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| 5 | 54LS74FMQB | Dual Positive-Edge-Triggered D Flip-Flops with Preset, Clear and Complementary Outputs | 139K |
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| 6 | 54LS74LMQB | Dual Positive-Edge-Triggered D Flip-Flops with Preset, Clear and Complementary Outputs | 139K |
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