전자부품 데이터시트 검색엔진 |
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74VHC138M 데이터시트(PDF) 4 Page - Fairchild Semiconductor |
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74VHC138M 데이터시트(HTML) 4 Page - Fairchild Semiconductor |
4 / 7 page www.fairchildsemi.com 4 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 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 8.2 11.4 1.0 13.5 ns CL = 15 pF tPHL An to On 10.0 15.8 1.0 18.0 CL = 50 pF 5.0 ± 0.5 5.7 8.1 1.0 9.5 ns CL = 15 pF 7.2 10.1 1.0 11.5 CL = 50 pF tPLH Propagation Delay 3.3 ± 0.3 8.1 12.8 1.0 15.0 ns CL = 15 pF tPHL E3 to On 10.6 16.3 1.0 18.5 CL = 50 pF 5.0 ± 0.5 5.6 8.1 1.0 9.5 ns CL = 15 pF 7.1 10.1 1.0 11.5 CL = 50 pF tPLH Propagation Delay 3.3 ± 0.3 8.2 11.4 1.0 13.5 ns CL = 15 pF tPHL E1 or E2 to On 10.7 14.9 1.0 17.0 CL = 50 pF 5.0 ± 0.5 5.8 8.1 1.0 9.5 ns CL = 15 pF 7.3 10.1 1.0 11.5 CL = 50 pF CIN Input Capacitance 4 10 10 pF VCC = Open CPD Power Dissipation 34 pF (Note 3) Capacitance |
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