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74VHC157SJ Datasheet(PDF) 4 Page - Fairchild Semiconductor |
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74VHC157SJ Datasheet(HTML) 4 Page - Fairchild Semiconductor |
4 / 7 page www.fairchildsemi.com 4 AC Electrical Characteristics Note 4: 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. Symbol Parameter VCC (V) TA = 25°CTA = −40°C to +85°C Units Conditions Min Typ Max Min Max tPLH Propagation Delay 3.3 ± 0.3 6.2 9.7 1.0 11.5 ns CL = 15 pF tPHL In to Zn 8.7 13.2 1.0 15.0 CL = 50 pF 5.0 ± 0.5 4.1 6.4 1.0 7.5 ns CL = 15 pF 5.68.4 1.09.5 CL = 50 pF tPLH Propagation Delay 3.3 ± 0.3 8.4 13.2 1.0 15.5 ns CL = 15 pF tPHL S to Zn 10.9 16.7 1.0 19.0 CL = 50 pF 5.0 ± 0.5 5.3 8.1 1.0 9.5 ns CL = 15 pF 6.8 10.1 1.0 11.5 CL = 50 pF tPLH Propagation Delay 3.3 ± 0.3 8.7 13.6 1.0 16.0 ns CL = 15 pF tPHL E to Zn 11.2 17.1 1.0 19.5 CL = 50 pF 5.0 ± 0.5 5.6 8.6 1.0 10.0 ns CL = 15 pF 7.1 10.6 1.0 12.0 CL = 50 pF CIN Input Capacitance 4 10 10 pF VCC = Open CPD Power Dissipation 20 pF (Note 4) Capacitance |
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