Datenblatt-Suchmaschine für elektronische Bauteile |
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74VHCT245ASJ Datenblatt(PDF) 3 Page - Fairchild Semiconductor |
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74VHCT245ASJ Datenblatt(HTML) 3 Page - Fairchild Semiconductor |
3 / 6 page 3 www.fairchildsemi.com Noise Characteristics Note 7: Parameter guaranteed by design. AC Electrical Characteristics Note 8: Parameter guaranteed by design. tOSLH = |tPLH max − tPLH min|; tOSHL = |tPHL max − tPHL min| Note 9: 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 by the equation: ICC (opr.) = CPD * VCC * fIN + ICC/8 (per F/F). The total CPD when n pcs. of the Octal D Flip-Flop operates can be calculated by the equation: CPD (total) = 20 + 12n. Symbol Parameter VCC (V) TA = 25°C Units Conditions Typ Limits VOLP (Note 7) Quiet Output Maximum Dynamic VOL 5.0 1.2 1.6 V CL = 50 pF VOLV (Note 7) Quiet Output Minimum Dynamic VOL 5.0 −1.2 −1.6 V CL = 50 pF VIHD (Note 7) Minimum HIGH Level Dynamic Input Voltage 5.0 2.0 V CL = 50 pF VILD (Note 7) Maximum LOW Level Dynamic Input Voltage 5.0 0.8 V CL = 50 pF Symbol Parameter V CC (V) TA = 25°CTA = −40°C to +85°C Units Conditions Min Typ Max Min Max tPLH Propagation Delay 5.0 ± 0.5 4.9 7.7 1.0 8.5 ns CL = 15 pF tPHL Time 5.4 8.7 1.0 9.5 CL = 50 pF tPZL 3-STATE Output 5.0 ± 0.5 9.4 13.8 1.0 15.0 ns RL = 1 kΩ CL = 15 pF tPZH Enable Time 9.9 14.8 1.0 16.0 CL = 50 pF tPLZ 3-STATE Output 5.0 ± 0.5 10.1 15.4 1.0 16.5 ns RL = 1 kΩ CL = 50 pF tPHZ Disable Time tOSLH Output to 5.0 ± 0.5 1.0 1.0 ns (Note 8) tOSHL Output Skew CIN Input 410 10 pF VCC = Open Capacitance COUT Output 13 pF VCC = 5.0V Capacitance CPD Power Dissipation 16 pF (Note 9) Capacitance |
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