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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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MM54HC74J 数据表(PDF) 3 Page - National Semiconductor (TI) |
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MM54HC74J 数据表(HTML) 3 Page - National Semiconductor (TI) |
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3 / 4 page  AC Electrical Characteristics VCCe5V TAe25 C CLe15 pF tretfe6ns Symbol Parameter Conditions Typ Guaranteed Units Limit fMAX Maximum Operating 72 30 MHz Frequency tPHL tPLH Maximum Propagation 10 30 ns Delay Clock to Q or Q tPHL tPLH Maximum Propagation 17 40 ns Delay Preset or Clear to Q or Q tREM Minimum Removal Time 6 5 ns Preset or Clear to Clock ts Minimum Setup Time 10 20 ns Data to Clock tH Minimum Hold Time 0 0 ns Clock to Data tW Minimum Pulse Width 8 16 ns Clock Preset or Clear AC Electrical Characteristics CLe50 pF tretfe6 ns (unless otherwise specified) TAe25 C 74HC 54HC Symbol Parameter Conditions VCC TAeb40 to 85 CTAeb55 to 125 C Units Typ Guaranteed Limits fMAX Maximum Operating 20V 22 6 5 4 MHz Frequency 45V 72 30 24 20 MHz 60V 94 35 28 24 MHz tPHL tPLH Maximum Propagation 20V 34 110 140 165 ns Delay Clock to Q or Q 45V 12 22 28 33 ns 60V 10 19 24 28 ns tPHL tPLH Maximum Propagation 20V 66 150 190 225 ns Delay Preset or Clear 45V 20 30 38 45 ns ToQorQ 60V 16 26 33 38 ns tREM Minimum Removal Time 20V 20 50 65 75 ns Preset or Clear 45V 6 10 13 15 ns To Clock 60V 5 9 11 13 ns ts Minimum Setup Time 20V 35 80 100 120 ns Data to Clock 45V 10 16 20 24 ns 60V 8 14 17 20 ns tH Minimum Hold Time 20V 0 0 0 ns Clock to Data 45V 0 0 0 ns 60V 0 0 0 ns tW Minimum Pulse Width 20V 30 80 101 119 ns Clock Preset or Clear 45V 9 16 20 24 ns 60V 8 14 17 20 ns tTLH tTHL Maximum Output 20V 25 75 95 110 ns Rise and Fall Time 45V 7 15 19 22 ns 60V 6 13 16 19 ns tr tf Maximum Input Rise and 20V 1000 1000 1000 ns Fall Time 45V 500 500 500 ns 60V 400 400 400 ns CPD Power Dissipation (per flip-flop) 80 pF Capacitance (Note 5) CIN Maximum Input 5 10 10 10 pF Capacitance Note 5 CPD determines the no load dynamic power consumption PDeCPD VCC2 faICC VCC and the no load dynamic current consumption ISeCPD VCC faICC 3 |
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