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74VHC221AMTC 데이터시트(PDF) 7 Page - Fairchild Semiconductor |
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74VHC221AMTC 데이터시트(HTML) 7 Page - Fairchild Semiconductor |
7 / 12 page ©1994 Fairchild Semiconductor Corporation www.fairchildsemi.com 74VHC221A Rev. 1.2 7 AC Electrical Characteristics(4) Notes: 4. Refer to 74VHC221A Timing Chart. 5. 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 1 • Duty / 100 + I CC / 2 (per Circuit) ICC 1: Active Supply Current Duty: % AC Operating Requirement Symbol Parameter VCC (V) Conditions TA = 25°C TA = –40°C to +85°C Units Min. Typ. Max. Min. Max. tPLH, tPHL Propagation Delay Time (A, B–Q, Q) 3.3 ± 0.3 CL = 15pF 13.4 20.6 1.0 24.0 ns CL = 50pF 15.9 24.1 1.0 27.5 5.0 ± 0.5 CL = 15pF 8.1 12.0 1.0 14.0 ns CL = 50pF 9.6 14.0 1.0 16.0 tPLH, tPHL Propagation Delay Time (CLR Trigger—Q, Q) 3.3 ± 0.3 CL = 15pF 14.5 22.4 1.0 26.0 ns CL = 50pF 17.0 25.9 1.0 29.5 5.0 ± 0.5 CL = 15pF 8.7 12.9 1.0 15.0 ns CL = 50pF 10.2 14.9 1.0 17.0 tPLH, tPHL Propagation Delay Time (CLR—Q, Q) 3.3 ± 0.3 CL = 15pF 10.3 15.8 1.0 18.5 ns CL = 50pF 12.8 19.3 1.0 22.0 5.0 ± 0.5 CL = 15pF 6.3 9.4 1.0 11.0 ns CL = 50pF 7.8 11.4 1.0 13.0 tWOUT Output Pulse Width 2.0 CX = 28pF, CL = 50pF, RX = 6kΩ 415 3.3 ± 0.3 345 ns 5.0 ± 0.5 312 3.3 ± 0.3 CL = 50pF, Cx = 28pF, Rx = 2kΩ 160 240 300 ns 5.0 ± 0.5 133 200 240 3.3 ± 0.3 CL = 50pF, Cx = 0.01µF, Rx = 10kΩ 90 100 110 90 110 µs 5.0 ± 0.5 90 100 110 90 110 3.3 ± 0.3 CL = 50pF, Cx = 0.1µF, Rx = 10kΩ 0.9 1.0 1.1 0.9 1.1 ms 5.0 ± 0.5 0.9 1.0 1.1 0.9 1.1 ∆t wOUT Output Pulse Width Error Between Circuits (In same Package) ±1 % CIN Input Capacitance VCC = Open 4 10 10 pF CPD Power Dissipation Capacitance (5) 73 pF Symbol Parameter VCC (V) TA = 25°C TA = –40°C to +85°C Units Min. Typ. Max. Min. Max. tW(L) Minimum Trigger 3.3 5.0 5.0 ns tW(H) Pulse Width 5.0 5.0 5.0 tW(L) Minimum Clear Pulse Width 3.3 5.0 5.0 ns 5.0 5.0 5.0 |
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