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M54HC373 데이터시트(PDF) 5 Page - STMicroelectronics |
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M54HC373 데이터시트(HTML) 5 Page - STMicroelectronics |
5 / 11 page M54HC373 5/11 Table 6: AC Electrical Characteristics (CL = 50 pF, Input tr =tf = 6ns) Table 7: Capacitive Characteristics 1) 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 operating current can be obtained by the following equation. ICC(opr) =CPD xVCC xfIN +ICC/8 (per Flip Flop) and the CPD when n pcs of Flip Flop operate, can be gained by the following equation: CPD(TOTAL) =22+16 x n (pF) Symbol Parameter Test Condition Value Unit VCC (V) CL (pF) TA = 25°C -40 to 85°C -55 to 125°C Min. Typ. Max. Min. Max. Min. Max. tTLH tTHL Output Transition Time 2.0 50 25 60 75 90 ns 4.5 7 12 15 18 6.0 6 10 13 15 tPLH tPHL Propagation Delay Time (LE, D - Q) 2.0 50 42 125 155 190 ns 4.5 14 25 31 38 6.0 12 21 26 32 2.0 150 57 175 220 265 ns 4.5 19 35 44 53 6.0 16 30 37 45 tPZL tPZH High Impedance Output Enable Time 2.0 50 RL =1 KΩ 39 125 155 190 ns 4.5 13 25 31 38 6.0 11 21 26 32 2.0 150 RL =1 KΩ 54 175 220 265 ns 4.5 18 35 44 53 6.0 15 30 37 45 tPLZ tPHZ High Impedance Output Disable Time 2.0 50 RL =1 KΩ 30 125 155 190 ns 4.5 14 25 31 38 6.0 13 21 26 32 tW(H) Minimum Pulse Width (LE) 2.0 50 15 75 95 110 ns 4.5 6 15 19 22 6.0 6 13 16 19 ts Minimum Set-up Time 2.0 50 16 50 65 75 ns 4.5 4 10 13 15 6.0 3 9 11 13 th Minimum Hold Time 2.0 50 55 5 ns 4.5 5 5 5 6.0 5 5 5 Symbol Parameter Test Condition Value Unit VCC (V) TA = 25°C -40 to 85°C -55 to 125°C Min. Typ. Max. Min. Max. Min. Max. CIN Input Capacitance 510 10 10 pF COUT Output Capacitance 10 pF CPD Power Dissipation Capacitance (note 1) 38 pF |
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