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TC74AC257P 数据表(PDF) 5 Page - Toshiba Semiconductor |
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TC74AC257P 数据表(HTML) 5 Page - Toshiba Semiconductor |
5 / 9 page TC74AC257,258P/F/FN 2007-10-01 5 AC Characteristics (CL = 50 pF, RL = 500 Ω, input: tr = tf = 3 ns) Ta = 25°C Ta = −40~85°C Characteristics Symbol Test Condition VCC (V) Min Typ. Max Min Max Unit Propagation delay time (A, B-Y, Y) tpLH tpHL ⎯ 3.3 ± 0.3 5.0 ± 0.5 ⎯ ⎯ 7.0 4.7 14.3 7.5 1.0 1.0 16.3 8.5 ns Propagation delay time (SELECT-Y, Y) tpLH tpHL ⎯ 3.3 ± 0.3 5.0 ± 0.5 ⎯ ⎯ 8.6 5.5 17.2 9.1 1.0 1.0 19.6 10.4 ns Output enable time tpZL tpHZ ⎯ 3.3 ± 0.3 5.0 ± 0.5 ⎯ ⎯ 7.3 5.0 14.0 7.9 1.0 1.0 16.0 9.0 ns Output disable time tpLZ tpHZ ⎯ 3.3 ± 0.3 5.0 ± 0.5 ⎯ ⎯ 5.6 5.1 9.6 7.9 1.0 1.0 11.0 9.0 ns Input capacitance CIN ⎯ ⎯ 5 10 ⎯ 10 pF Output capacitance COUT ⎯ ⎯ 10 ⎯ ⎯ ⎯ pF Power dissipation capacitance CPD (Note) ⎯ ⎯ 28 ⎯ ⎯ ⎯ 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/4 (per bit) |
类似零件编号 - TC74AC257P_07 |
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类似说明 - TC74AC257P_07 |
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