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TC74ACT161F Datasheet(PDF) 7 Page - Toshiba Semiconductor |
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TC74ACT161F Datasheet(HTML) 7 Page - Toshiba Semiconductor |
7 / 13 page TC74ACT161,163P/F/FN 2007-10-01 7 AC Characteristics (CL = 50 pF, RL = 500 Ω, input: tr = tf = 3 ns) Test Condition Ta = 25°C Ta = −40 to 85°C Characteristics Symbol VCC (V) Min Typ. Max Min Max Unit Propagation delay time (CK-Q) tpLH tpHL Figure 1 5.0 ± 0.5 ⎯ 7.2 10.5 1.0 12.0 ns Propagation delay time (CK-CARRY, count mode) tpLH tpHL Figure 1 5.0 ± 0.5 ⎯ 8.5 13.0 1.0 15.0 ns Propagation delay time (CK-CARRY, preset mode) tpLH tpHL Figure 2 5.0 ± 0.5 ⎯ 9.7 15.0 1.0 17.0 ns Propagation delay time (ENT-CARRY) tpLH tpHL Figure 6 5.0 ± 0.5 ⎯ 6.6 10.0 1.0 11.5 ns Propagation delay time (Note 2) ( CLR -Q) tpHL Figure 4 5.0 ± 0.5 ⎯ 6.3 10.0 1.0 11.5 ns Propagation delay time (Note 2) ( CLR -CARRY) tpHL Figure 4 5.0 ± 0.5 ⎯ 7.7 12.3 1.0 14.0 ns Maximum clock frequency fmax ⎯ 5.0 ± 0.5 70 100 ⎯ 60 ⎯ MHz Input capacitance CIN ⎯ ⎯ 5 10 ⎯ 10 pF Power dissipation capacitance CPD (Note 1) ⎯ ⎯ 32 ⎯ ⎯ ⎯ pF Note 1: 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 I CO QD QC QB QA CC CK CC + + + + ⋅ = Δ CQA~CQD and CCO are the capacitances at QA~QD and CARRY OUT, respectively. fCK is the input frequency of the CK. Note 2: for TC74ACT161 only |
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