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74F456 Datasheet(PDF) 3 Page - NXP Semiconductors |
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74F456 Datasheet(HTML) 3 Page - NXP Semiconductors |
3 / 12 page Philips Semiconductors Product specification 74F455,* 74F456 Buffers/Drivers 1999 Jan 08 3 * Discontinued part. Please see the Discontinued Products List. LOGIC SYMBOL – 74F455 D0 D1 D2 D3 D4 D5 D6 D7 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 OE0 OE1 PI ΣE ΣO 4 5689 10 11 12 23 24 1 2 3 22 21 20 17 16 15 14 13 SF00959 VCC = Pin 7 GND = Pin 18, 19 LOGIC SYMBOL (IEEE/IEC) – 74F455 SF00961 4 6 8 9 3,5,6,7,8 9,10,11,12 1 2 2K 21 20 17 Z6 5 22 10 11 12 15 14 13 16 4 24 23 3 Z5 Z8 Z7 Z9 Z11 Z10 Z12 w1 EN4 P3 3,5,6,7,8 9,10,11,12 [EVEN] [ODD] LOGIC SYMBOL – 74F456 D0 D1 D2 D3 D4 D5 D6 D7 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 OE0 OE1 PI ΣE ΣO 4 5689 10 11 12 23 24 1 2 3 22 21 20 17 16 15 14 13 SF00960 VCC = Pin 7 GND = Pin 18, 19 LOGIC SYMBOL (IEEE/IEC) – 74F456 SF00962 4 6 8 9 3,5,6,7,8 9,10,11,12 1 2 2K 21 20 17 Z6 5 22 10 11 12 15 14 13 16 4 24 23 3 Z5 Z8 Z7 Z9 Z11 Z10 Z12 1 EN4 P3 3,5,6,7,8 9,10,11,12 [EVEN] [ODD] FUNCTION TABLE INPUTS OUTPUTS 74F455 74F456 OE0 OE1 Dn Qn Qn L L L H L L L H L H H X X Z Z X H X Z Z H = High voltage level L = Low voltage level Z = High impedance “off” state X = Don’t care FUNCTION TABLE for PARITY OUTPUTS INPUTS OUTPUTS Number of inputs, High (PI, D0 - D7) ΣE ΣO Even - 0, 2, 4, 6, 8 H L Odd - 1, 3, 5, 7, 9 L H Any OEn = High Z Z H = High voltage level L = Low voltage level Z = High impedance “off” state X = Don’t care |
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