| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | SN54ALS20A | DUAL 4-INPUT POSITIVE-NAND GATES | 97K |
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| 2 | SN54ALS20A | DUAL 4-INPUT POSITIVE-NAND GATES | 125K |
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| 3 | SN54ALS20A | DUAL 4-INPUT POSITIVE-NAND GATES | 125K |
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| 4 | SN54ALS20AFK | DUAL 4-INPUT POSITIVE-NAND GATES | 97K |
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| 5 | SN54ALS20AJ | DUAL 4-INPUT POSITIVE-NAND GATES | 97K |
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| 6 | SN54ALS20AJ | DUAL 4-INPUT POSITIVE-NAND GATES | 125K |
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| 7 | SN54ALS20AJ | DUAL 4-INPUT POSITIVE-NAND GATES | 125K |
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