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74F191 Datasheet(PDF) 5 Page - Fairchild Semiconductor |
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74F191 Datasheet(HTML) 5 Page - Fairchild Semiconductor |
5 / 7 page 5 www.fairchildsemi.com AC Electrical Characteristics AC Operating Requirements Symbol Parameter TA = +25°CTA = −55°C to +125°CTA = 0°C to +70°C Units VCC = +5.0V VCC = +5.0V VCC = +5.0V CL = 50 pF CL = 50 pF CL = 50 pF Min Typ Max Min Max Min Max fMAX Maximum Count Frequency 100 125 75 90 MHz tPLH Propagation Delay 3.0 5.5 7.5 3.0 9.5 3.0 8.5 ns tPHL CP to Qn 5.0 8.5 11.0 5.0 13.5 5.0 12.0 tPLH Propagation Delay 6.0 10.0 13.0 6.0 16.5 6.0 14.0 tPHL CP to TC 5.0 8.5 11.0 5.0 13.5 5.0 12.0 tPLH Propagation Delay 3.0 5.5 7.5 3.0 9.5 3.0 8.5 ns tPHL CP to RC 3.0 5.0 7.0 3.0 9.0 3.0 8.0 tPLH Propagation Delay 3.0 5.0 7.0 3.0 9.0 3.0 8.0 tPHL CE to RC 3.0 5.5 7.0 3.0 9.0 3.0 8.0 tPLH Propagation Delay 7.0 11.0 18.0 7.0 22.0 7.0 20.0 ns tPHL U/D to RC 5.5 9.0 12.0 5.5 14.0 5.5 13.0 tPLH Propagation Delay 4.0 7.0 10.0 4.0 13.5 4.0 11.0 tPHL U/D to TC 4.0 6.5 10.0 4.0 12.5 4.0 11.0 tPLH Propagation Delay 3.0 4.5 7.0 3.0 9.0 3.0 8.0 ns tPHL Pn to Qn 6.0 10.0 13.0 6.0 16.0 6.0 14.0 tPLH Propagation Delay 5.0 8.5 11.0 5.0 13.0 5.0 12.0 ns tPHL PL to Qn 5.5 9.0 12.0 5.5 14.5 5.5 13.0 tPLH Propagation Delay 5.0 14.0 5.0 15.0 ns tPHL Pn to TC 6.5 13.0 6.0 14.0 tPLH Propagation Delay 6.5 19.0 6.5 20.0 ns tPHL Pn to RC 6.0 14.0 6.0 15.0 tPLH Propagation Delay 8.0 16.5 8.0 17.5 ns tPHL PL to TC 6.0 13.5 6.0 14.5 tPLH Propagation Delay 10.0 20.0 10.0 21.0 ns tPHL PL to RC 9.0 15.5 9.0 16.0 Symbol Parameter TA = +25°CTA = −55°C to +125°CTA = 0°C to +70°C Units VCC = +5.0V VCC = +5.0V VCC = +5.0V Min Max Min Max Min Max tS(H) Setup Time, HIGH or LOW 4.5 6.0 5.0 ns tS(L) Pn to PL 4.5 6.0 5.0 tH(H) Hold Time, HIGH or LOW 2.0 2.0 2.0 tH(L) Pn to PL 2.0 2.0 2.0 tS(L) Setup Time LOW 10.0 10.5 10.0 ns CE to CP tH(L) Hold Time LOW 0 0 0 CE to CP tS(H) Setup Time, HIGH or LOW 12.0 12.0 12.0 ns tS(L) U/D to CP 12.0 12.0 12.0 tH(H) Hold Time, HIGH or LOW 0 0 0 tH(L) U/D to CP 00 0 tW(L) PL Pulse Width LOW 6.0 8.5 6.0 ns tW(L) CP Pulse Width LOW 5.0 7.0 5.0 ns tREC Recovery Time 6.0 7.5 6.0 ns PL to CP |
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