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TC74HCT273AP 데이터시트(PDF) 5 Page - Toshiba Semiconductor |
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5 / 8 page TC74HCT273AP/AF 2007-10-01 5 AC Characteristics (CL = 50 pF, input: tr = tf = 6 ns) Test Condition Ta = 25°C Ta = −40~85°C Characteristics Symbol VCC (V) Min Typ. Max Min Max Unit Output transition time tTLH tTHL ⎯ 4.5 5.5 ⎯ ⎯ 9 8 15 14 ⎯ ⎯ 19 18 ns Propagation delay time (CK-Q) tpLH tpHL ⎯ 4.5 5.5 ⎯ ⎯ 19 17 30 27 ⎯ ⎯ 38 34 ns Propagation delay time ( CLR -Q) tpLH tpHL ⎯ 4.5 5.5 ⎯ ⎯ 22 18 32 29 ⎯ ⎯ 40 36 ns Maximum clock frequency fmax ⎯ 4.5 5.5 30 35 71 81 ⎯ ⎯ 24 28 ⎯ ⎯ MHz Input capacitance CIN ⎯ ⎯ 5 10 ⎯ 10 pF Power dissipation capacitance CPD (Note) ⎯ ⎯ 29 ⎯ ⎯ ⎯ pF Note: 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 flip flop) And the total CPD when n pcs. of flip flop operate can be gained by the following equation: CPD (total) = 18 + 11・n |
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