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74F240A Datasheet(PDF) 3 Page - NXP Semiconductors |
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74F240A Datasheet(HTML) 3 Page - NXP Semiconductors |
3 / 12 page Philips Semiconductors Product specification 74F240/74F240A/ 74F241/74F241A Buffers January 2, 1991 3 PIN CONFIGURATION FOR 74F240/74F240A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 SF00320 OEa Ia0 Yb0 Ia1 Yb1 Ia2 Yb2 Ia3 Yb3 GND VCC OEb Ya0 Ib0 Ya1 Ib1 Ya2 Ib2 Ya3 Ib3 LOGIC SYMBOL FOR 74F240/74F240A VCC = Pin 20 GND = Pin 10 SF00321 1 19 OEa OEb 2 4 6 8 17 15 13 11 18 16 14 12 3579 Ia0 Ia1 Ia2 Ia3 Ib0 Ib1 Ib2 Ib3 Ya0 Ya1 Ya2 Ya3 Yb0 Yb1 Yb2 Yb3 IEC/IEEE SYMBOL FOR 74F240/74F240A 2D 1 2 SF00322 1 19 EN1 EN2 4 2 6 8 17 15 13 11 18 16 14 12 3 5 7 9 LOGIC DIAGRAM FOR 74F240/74F240A VCC = Pin 20 GND = Pin 10 SF00323 Yb0 Yb1 Yb2 Yb3 3 5 7 9 17 15 13 11 10 Ya0 Ya1 Ya2 Ya3 18 16 14 12 2 4 6 8 1 Ib0 Ib1 Ib2 Ib3 OEb Ia0 Ia1 Ia2 Ia3 OEa FUNCTION TABLE FOR 74F240/74F240A INPUTS OUTPUTS OEa Ia OEb Ib Ya Yb L L L L H H L H L H L L H X H X Z Z Notes to function table for 74F240/74F240A H = High voltage level L = Low voltage level X = Don’t care Z = High impedance ”off” state |
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