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74LVC240APW 데이터시트(PDF) 3 Page - NXP Semiconductors |
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74LVC240APW 데이터시트(HTML) 3 Page - NXP Semiconductors |
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3 / 11 page ![]() Philips Semiconductors Product specification 74LVC240A Octal buffer/line driver with 5-volt tolerant inputs/outputs; inverting (3-State) 1998 May 20 3 PIN DESCRIPTION PIN NUMBER SYMBOL FUNCTION 1 1OE Output enable input (active LOW) 2, 4, 6, 8 1A0 to 1A3 Data inputs 3, 5, 7, 9 2Y0 to 2Y3 Bus outputs 10 GND Ground (0V) 17, 15, 13, 11 2A0 to 2A3 Bus inputs 18, 16, 14, 12 1Y0 to 1Y3 Bus outputs 19 2OE Output enable input (active-LOW) 20 VCC Positive power supply PIN CONFIGURATION 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 1OE 1A0 2Y0 1A1 2Y1 1A2 2Y2 1A3 2Y3 1Y3 GND 2A2 1Y2 2A1 1Y1 2A0 1Y0 2OE VCC 2A3 SV00212 LOGIC SYMBOL (IEEE/IEC) SV00611 18 16 14 12 2 4 6 8 EN 1 9 7 5 3 11 13 15 17 EN 19 FUNCTION TABLE INPUTS OUTPUT nOE nAn nYn L L H L H L H X Z H = HIGH voltage level L = LOW voltage level X = Don’t care Z = High impedance OFF-state LOGIC SYMBOL SV00608 1A 0 2A 0 2 17 1A 1 2A 1 4 15 1A 2 2A 2 6 13 1A 3 2A 3 8 11 1OE 2OE 1 19 1Y 0 2Y 0 18 3 1Y 1 2Y 1 16 5 1Y 2 2Y 2 14 7 1Y 3 2Y 3 12 9 FUNCTIONAL DIAGRAM SV00610 2Y 0 3 2Y 1 5 2Y 2 7 2Y 3 9 2A 0 17 2A 1 15 2A 2 13 2A 3 11 2OE 19 1Y 0 18 1Y 1 16 1Y 2 14 1Y 3 12 1A 0 2 1A 1 4 1A 2 6 1A 3 8 1OE 1 |
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