전자부품 데이터시트 검색엔진 |
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74VHC74 데이터시트(PDF) 5 Page - Fairchild Semiconductor |
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74VHC74 데이터시트(HTML) 5 Page - Fairchild Semiconductor |
5 / 10 page ©1992 Fairchild Semiconductor Corporation www.fairchildsemi.com AC Electrical Characteristics Note: 3. CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load. Average operating current can be obtained from the equation: ICC (opr.) = CPD • VCC • fIN + ICC / 2 (per F/F). AC Operating Requirements Note: 4. VCC is 3.3 ± 0.3V or 5.0 ± 0.5V Symbol Parameter VCC (V) Conditions TA = 25°C TA = –40°C to +85°C Units Min. Typ. Max. Min. Max. fMAX Maximum Clock Frequency 3.3 ± 0.3 CL = 15pF 80 125 70 MHz CL = 50pF 50 75 45 5.0 ± 0.5 CL = 15pF 130 170 110 CL = 50pF 90 115 75 tPLH, tPHL Propagation Delay Time (CK-Q, Q) 3.3 ± 0.3 CL = 15pF 6.7 11.9 1.0 14.0 ns CL = 50pF 9.2 15.4 1.0 17.5 5.0 ± 0.5 CL = 15pF 4.6 7.3 1.0 8.5 CL = 50pF 6.1 9.3 1.0 10.5 tPLH, tPHL Propagation Delay Time (CLR, PR -Q, Q) 3.3 ± 0.3 CL = 15pF 7.6 12.3 1.0 14.5 ns CL = 50pF 10.1 15.8 1.0 18.0 5.0 ± 0.5 CL = 15pF 4.8 7.7 1.0 9.0 CL = 50pF 6.3 9.7 1.0 11.0 CIN Input Capacitance VCC = Open 4 10 10 pF CPD Power Dissipation Capacitance (3) 25 pF Symbol Parameter VCC (V) (4) TA = 25°C TA = –40°C to +85°C Units Typ. Guaranteed Minimum tW(L), tW(H) Minimum Pulse Width (CK) 3.3 6.0 7.0 ns 5.0 5.0 5.0 tW(L) Minimum Pulse Width (CLR, PR) 3.3 6.0 7.0 ns 5.0 5.0 5.0 tS Minimum Setup Time 3.3 6.0 7.0 ns 5.0 5.0 5.0 tH Minimum Hold Time 3.3 0.5 0.5 ns 5.0 0.5 0.5 tREC Minimum Recovery Time (CLR, PR) 3.3 5.0 5.0 ns 5.0 3.0 3.0 74VHC74 Rev. 1.3.1 5 |
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