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74ALVCH32245LBR Scheda tecnica(PDF) 5 Page - STMicroelectronics |
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74ALVCH32245LBR Scheda tecnica(HTML) 5 Page - STMicroelectronics |
5 / 9 page 74ALVCH32245 5/9 AC ELECTRICAL CHARACTERISTICS 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/32 (per circuit) Symbol Parameter Test Condition Value Unit VCC (V) CL (pF) -40 to 85 °C Min. Max. tPLH tPHL Propagation Delay Time 2.3 to 2.7 30 1.0 3.7 ns 2.7 50 1.0 3.6 3.0 to 3.6 50 1.0 3.0 tPZL tPZH Output Enable Time 2.3 to 2.7 30 1.0 5.7 ns 2.7 50 1.0 5.4 3.0 to 3.6 50 1.0 4.4 tPLZ tPHZ Output Disable Time 2.3 to 2.7 30 1.0 5.2 ns 2.7 50 1.0 4.6 3.0 to 3.6 50 1.0 4.1 Symbol Parameter Test Condition Value Unit VCC (V) TA = 25 °C Min. Typ. Max. CIN Input Capacitance 3.3 VI = 0V or VCC 4pF COUT Output Capacitance 3.3 VI = 0V or VCC 8pF CPD Power Dissipation Capacitance (note 1) 2.5 fIN = 10MHz VI = 0V or VCC 22 pF 3.3 28 |
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