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MC74VHC139 数据表(PDF) 2 Page - ON Semiconductor |
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MC74VHC139 数据表(HTML) 2 Page - ON Semiconductor |
2 / 8 page MC74VHC139 http://onsemi.com 2 Figure 1. Logic Diagram A0a A1a Ea A0b A1b 1 Eb Y0a Y1a Y2a Y3a Y0b Y1b Y2b Y3b ACTIVE-LOW OUTPUTS ADDRESS INPUTS ACTIVE-LOW OUTPUTS 3 2 ADDRESS INPUTS 13 14 15 4 5 6 7 12 11 10 9 Table 1. FUNCTION TABLE Inputs Outputs E A1 A0 Y0 Y1 Y2 Y3 H X X H H H H L L L L H H H L L H H L H H L H L H H L H L H H H H H L En A0 A1 Y0 Y1 Y2 Y3 Figure 2. Expanded Logic Diagram (1/2 of Device) INPUT Figure 3. Input Equivalent Circuit 4 Figure 4. IEC Logic Diagram Y0a Y1a Y2a Y3a Y0b Y1b Y2b Y3b 5 6 7 12 11 10 9 15 14 13 1 2 3 A1a A0a Ea A1b A0b Eb 2 1 EN X/Y 1 0 2 3 0 1 DMUX 1 0 2 3 G 0 3 15 14 13 1 2 3 A1a A0a Ea A1b A0b Eb Y0a Y1a Y2a Y3a Y0b Y1b Y2b Y3b 4 5 6 7 12 11 10 9 |
类似零件编号 - MC74VHC139_11 |
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类似说明 - MC74VHC139_11 |
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