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74LVC139 데이터시트(PDF) 3 Page - NXP Semiconductors |
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74LVC139 데이터시트(HTML) 3 Page - NXP Semiconductors |
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3 / 10 page ![]() Philips Semiconductors Product specification 74LVC139 Dual 2-to-4 line decoder/demultiplexer 1998 Apr 28 3 LOGIC DIAGRAM SV00531 1Y 0 1E 2E 1Y 1 1A 0 1Y 2 1A 1 1Y 3 2Y 0 2Y 1 2Y 2 2Y 3 4 5 6 7 12 11 10 9 1 15 2 3 2A 0 2A 1 14 13 LOGIC SYMBOL (IEEE/IEC) SV00532 (a) (b) DX X/Y 00 11 22 33 44 55 66 77 01 12 EN EN 22 33 11 DX X/Y 00 11 22 33 12 12 11 11 10 10 99 01 G 0 –– 3 12 14 14 13 13 15 15 G 0 –– 3 FUNCTIONAL DIAGRAM SV00534 1Ao 1A1 1E 1Ao 2A1 2E 1Y0 1Y1 1Y2 1Y3 2Y0 2Y1 2Y2 2Y3 2 3 1 14 13 15 4 5 6 7 12 11 10 9 DECODER DECODER FUNCTION TABLE INPUTS OUTPUTS nE nA0 nA1 nY0 nY1 nY2 nY3 H X X H H H H L L L L H H H L H L H L H H L L H H H L H L H H H H H L NOTES: H = HIGH voltage level L = LOW voltage level X = don’t care |
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