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M74HCT533B1R Scheda tecnica(PDF) 6 Page - STMicroelectronics |
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M74HCT533B1R Scheda tecnica(HTML) 6 Page - STMicroelectronics |
6 / 13 page AC ELECTRICAL CHARACTERISTICS (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 (LE - Q) 4.5 50 20 30 38 45 ns 4.5 150 24 37 46 56 ns tPLH tPHL Propagation Delay Time (D - Q) 4.5 50 19 30 38 45 ns 4.5 150 23 36 45 54 ns tPZL tPZH 3 State Output Enable Time (OE - Q) 4.5 50 RL =1 K Ω 20 30 38 45 ns 4.5 150 RL =1 K Ω 24 37 46 56 ns tPLZ tPHZ 3 State Output Disable Time (OE - Q) 4.5 50 RL =1 K Ω 20 30 38 45 ns tW(H) Minimum Pulse Width (LE) 4.5 50 8 15 19 22 ns ts Minimum Set-up Time 4.5 50 4 10 13 15 ns th Minimum Hold Time 4.5 50 5 5 8 ns CIN Input Capacitance 5 10 10 10 pF CPD (*) Power Dissipation Capacitance HCT373 HCT533 66 52 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/8 (per Flip Flop) and the CPD when N pcs of Flip Flop operate, can be gained by following equation: CPD (TOTAL) = 32 + 34 x n [pF] (for HCT373); 30 + 22 x n [pF] (for HCT533) M54/M74HCT373/533 6/13 |
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