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TC74AC163FT Datasheet(PDF) 8 Page - Toshiba Semiconductor |
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TC74AC163FT Datasheet(HTML) 8 Page - Toshiba Semiconductor |
8 / 15 page TC74AC161,163P/F/FN/FT 2007-10-01 8 AC Characteristics (CL = 50 pF, RL = 500 Ω, input: tr = tf = 3 ns) Ta = 25°C Ta = −40 to 85°C Characteristics Symbol Test Condition VCC (V) Min Typ. Max Min Max Unit Propagation delay time (CK-Q) tpLH tpHL Figure 1 3.3 ± 0.3 5.0 ± 0.5 ― ― 8.8 6.5 15.8 9.6 1.0 1.0 18.0 11.0 ns Propagation delay time (CK-carry, count mode) tpLH tpHL Figure 1 3.3 ± 0.3 5.0 ± 0.5 ― ― 10.4 8.1 18.4 11.8 1.0 1.0 21.6 13.5 ns Propagation delay time (CK-carry, preset mode) tpLH tpHL Figure 2 3.3 ± 0.3 5.0 ± 0.5 ― ― 12.9 9.1 22.4 13.2 1.0 1.0 25.5 15.0 ns Propagation delay time (ENT-carry) tpLH tpHL Figure 6 3.3 ± 0.3 5.0 ± 0.5 ― ― 7.5 5.8 13.2 8.3 1.0 1.0 15.0 9.5 ns Propagation delay time ( CLR -Q) (Note 1) tpHL Figure 4 3.3 ± 0.3 5.0 ± 0.5 ― ― 10.6 7.7 18.4 11.4 1.0 1.0 21.0 13.0 ns Propagation delay time ( CLR -carry) (Note 1) tpHL Figure 4 3.3 ± 0.3 5.0 ± 0.5 ― ― 12.0 8.6 21.0 12.7 1.0 1.0 24.0 14.5 ns Maximum clock frequency fmax ― 3.3 ± 0.3 5.0 ± 0.5 50 90 110 140 ― ― 50 90 ― ― MHz Input capacitance CIN ― ― 5 10 ― 10 pF Power dissipation capacitance CPD (Note 2 ― 85 ― ― ― pF Note 1: For TC74AC161 only Note 2: 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 When the outputs drive a capacitive load, total current consumption is the sum of CPD, and ΔICC which is obtained from the following formula: ⎟⎟ ⎠ ⎞ ⎜⎜ ⎝ ⎛ + + + + ⋅ 16 C 16 C 8 C 4 C 2 C V f = ΔI CO QD QC QB QA CC CK CC CQA to CQD and CCO are the capacitances at QA to QD and CARRY OUT, respectively. fCK is the input frequency of the CK. |
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