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M74HCT574 Datasheet(PDF) 6 Page - STMicroelectronics |
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M74HCT574 Datasheet(HTML) 6 Page - STMicroelectronics |
6 / 13 page AC ELECTRICAL CHARACTERISTICS (CL =50 pF, Input tr =tf =6 ns) Symbol Parameter Test Conditions Value Unit VCC (V) CL (pF) TA =25 oC 54HC and 74HC -40 to 85 oC 74HC -55 to 125 oC 54HC Min. Typ. Max. Min. Max. Min. Max. tTLH tTHL Output Transition Time 4.5 50 7 12 15 18 ns tPLH tPHL Propagation Delay Time 4.5 50 20 30 38 45 ns 4.5 150 24 36 45 54 tPZL tPZH 3 State Output Enable Time 4.5 50 RL =1 K Ω 19 30 38 45 ns 4.5 150 RL =1 K Ω 23 36 45 54 tPLZ tPHZ 3 State Output Disable Time 4.5 50 RL =1 K Ω 19 30 38 45 ns fMAX Maximum CLock Frequency 4.5 50 31 50 25 21 ns tW(L) tW(H) Minimum Pulse Width (CLOCK) 4.5 50 8 15 19 22 ns ts Minimum Set-up Time 4.5 50 7 15 19 22 ns th Minimum Hold Time 4.5 50 0 0 0 ns CIN Input Capacitance 5 10 10 10 pF COUT Out put Capacitance 10 pF CPD (*) Power Dissipation Capacitance HCT564 HCT574 67 63 pF (*) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load. (Refer to Test Circuit). Average operting current can be obtained by the following equation. ICC(opr) = CPD •VCC •fIN +ICC (per Flip-Flop) M54/M74HCT564/574 6/13 |
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