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MC74VHCT139ADR2 Scheda tecnica(PDF) 2 Page - ON Semiconductor |
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MC74VHCT139ADR2 Scheda tecnica(HTML) 2 Page - ON Semiconductor |
2 / 7 page MC74VHCT139A http://onsemi.com 2 Figure 1. Pin Assignment 13 14 15 16 9 10 11 12 5 4 3 2 1 8 7 6 Ea A1a A0a GND A1b A0b Eb VCC Y0a Y1a Y2a Y3a Y0b Y1b Y2b Y3b Figure 2. 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 En A0 A1 Y0 Y1 Y2 Y3 Figure 3. Expanded Logic Diagram (1/2 of Device) INPUT Figure 4. Input Equivalent Circuit 4 Figure 5. 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 03 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 |
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