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M74HC148B1R Datenblatt(PDF) 5 Page - STMicroelectronics |
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M74HC148B1R Datenblatt(HTML) 5 Page - STMicroelectronics |
5 / 11 page M74HC148 5/11 AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6ns) 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 x VCC x fIN + ICC 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. tTLH tTHL Output Transition Time 2.0 30 75 95 110 ns 4.5 8 151922 6.0 7 131619 tPLH tPHL Propagation Delay Time (In - A0, A1, A2) 2.0 60 150 190 225 ns 4.5 19 30 38 45 6.0 16 26 32 38 tPLH tPHL Propagation Delay Time (In - EO, GS) 2.0 60 150 190 225 ns 4.5 19 30 38 45 6.0 16 26 32 38 tPLH tPHL Propagation Delay Time ( EI -EO) 2.0 40 115 145 175 ns 4.5 14 23 29 35 6.0 12 20 25 30 tPLH tPHL Propagation Delay Time (EI -GS) 2.0 40 115 145 175 ns 4.5 14 23 29 35 6.0 12 20 25 30 tPLH tPHL Propagation Delay Time (EI - A0, A1, A2) 2.0 40 115 145 175 ns 4.5 14 23 29 35 6.0 12 20 25 30 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 5.0 5 101010 pF CPD Power Dissipation Capacitance (note 1) 5.0 60 pF |
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