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74VHC221AMTC Datasheet(PDF) 5 Page - Fairchild Semiconductor |
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74VHC221AMTC Datasheet(HTML) 5 Page - Fairchild Semiconductor |
5 / 9 page 5 www.fairchildsemi.com AC Electrical Characteristics (Note 6) Note 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: % Note 6: Refer to 74VHC221A Timing Chart. AC Operating Requirement Symbol Parameter VCC (V) TA = 25°CTA = −40°C to +85°C Units Conditions Min Typ Max Min Max tPLH Propagation Delay Time 3.3 ± 0.3 13.4 20.6 1.0 24.0 ns CL = 15 pF tPHL (A, B–Q, Q) 15.9 24.1 1.0 27.5 CL = 50 pF 5.0 ± 0.5 8.1 12.0 1.0 14.0 ns CL = 15 pF 9.6 14.0 1.0 16.0 CL = 50 pF tPLH Propagation Delay Time 3.3 ± 0.3 14.5 22.4 1.0 26.0 ns CL = 15 pF tPHL (CLR Trigger—Q, Q) 17.0 25.9 1.0 29.5 CL = 50 pF 5.0 ± 0.5 8.7 12.9 1.0 15.0 ns CL = 15 pF 10.2 14.9 1.0 17.0 CL = 50 pF tPLH Propagation Delay Time 3.3 ± 0.3 10.3 15.8 1.0 18.5 ns CL = 15 pF tPHL (CLR—Q, Q) 12.8 19.3 1.0 22.0 CL = 50 pF 5.0 ± 0.5 6.3 9.4 1.0 11.0 ns CL = 15 pF 7.811.41.0 13.0 CL = 50 pF tWOUT Output Pulse Width 2.0 415 CX = 28 pF 3.3 ± 0.3 345 ns CL = 50 pF RX = 6 kΩ 5.0 ± 0.5 312 3.3 ± 0.3 160 240 300 ns CL = 50 pF Cx = 28 pF 5.0 ± 0.5 133 200 240 Rx = 2 kΩ 3.3 ± 0.3 90 100 110 90 110 µs CL = 50 pF Cx = 0.01 µF 5.0 ± 0.5 90 100 110 90 110 Rx = 10 kΩ 3.3 ± 0.3 0.9 1.0 1.1 0.9 1.1 ms CL = 50 pF Cx = 0.1 µF 5.0 ± 0.5 0.9 1.0 1.1 0.9 1.1 Rx = 10 kΩ ∆t wOUT Output Pulse Width Error Between Circuits ±1% (In same Package) CIN Input Capacitance 4 10 10 pF VCC = Open CPD Power Dissipation 73 pF (Note 5) Capacitance Symbol Parameter VCC (V) TA = 25°CTA = −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 3.3 5.0 5.0 ns Pulse Width 5.0 5.0 5.0 |
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