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M74HC125B1R Datenblatt(PDF) 4 Page - STMicroelectronics |
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M74HC125B1R Datenblatt(HTML) 4 Page - STMicroelectronics |
4 / 10 page M74HC125 4/10 AC ELECTRICAL CHARACTERISTICS (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/4 (per buffer) 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 20 60 75 90 ns 4.5 6 121518 6.0 5 101315 tPLH tPHL Propagation Delay Time 2.0 50 36 75 95 110 ns 4.5 9 151922 6.0 8 131619 2.0 150 52 105 130 160 ns 4.5 13 21 26 32 6.0 11 18 22 27 tPZL tPZH High Impedance Output Enable Time 2.0 50 RL = 1 KΩ 36 75 95 110 ns 4.5 9 151922 6.0 8 131619 2.0 150 RL = 1 KΩ 52 105 130 160 ns 4.5 13 21 26 32 6.0 11 18 22 27 tPLZ tPHZ High Impedance Output Disable Time 2.0 50 RL = 1 KΩ 48 80 100 120 ns 4.5 12 16 20 24 6.0 10 14 17 20 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 35 pF |
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