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74F190 Datasheet(PDF) 5 Page - National Semiconductor (TI) |
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74F190 Datasheet(HTML) 5 Page - National Semiconductor (TI) |
5 / 10 page AC Electrical Characteristics 74F 54F 74F TA ea25 C TA VCC e Mil TA VCC e Com Symbol Parameter VCC ea50V CL e 50 pF CL e 50 pF Units CL e 50 pF Min Typ Max Min Max Min Max fmax Maximum Clock Frequency 100 125 75 90 MHz tPLH Propagation Delay 30 55 75 30 95 30 85 tPHL CP to Qn 50 85 110 50 135 50 120 ns tPLH Propagation Delay 60 100 130 60 165 60 140 tPHL CP to TC 50 85 110 50 135 50 120 tPLH Propagation Delay 30 55 75 30 95 30 85 tPHL CP to RC 30 50 70 30 90 30 80 ns tPLH Propagation Delay 30 50 70 30 90 30 80 tPHL CE to RC 30 55 70 30 90 30 80 tPLH Propagation Delay 70 110 180 70 220 70 200 tPHL U D to RC 55 90 120 55 140 55 130 ns tPLH Propagation Delay 40 70 100 40 135 40 110 tPHL U D to TC 40 65 100 40 125 40 110 tPLH Propagation Delay 30 45 70 30 90 30 80 ns tPHL Pn to Qn 60 100 130 60 160 60 140 tPLH Propagation Delay 50 85 110 50 130 50 120 ns tPHL PL to Qn 55 90 120 55 145 55 130 AC Operating Requirements 74F 54F 74F Symbol Parameter TA ea25 C TA VCC e Mil TA VCC e Com Units VCC ea50V Min Max Min Max Min Max ts(H) Setup Time HIGH or LOW 45 60 50 ts(L) Pn to PL 45 60 50 ns th(H) Hold Time HIGH or LOW 20 20 20 th(L) Pn to PL 20 20 20 ts(L) Setup Time LOW 100 105 100 CE to CP ns th(L) Hold Time LOW 000 CE to CP ts(H) Setup Time HIGH or LOW 120 120 120 ts(L) U D to CP 120 120 120 ns th(H) Hold Time HIGH or LOW 0 0 0 th(L) U D to CP 0 0 0 tw(L) PL Pulse Width LOW 60 85 60 ns tw(L) CP Pulse Width LOW 50 70 50 ns trec Recovery Time PL to CP 60 75 60 ns 5 |
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