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74VHC574 Datasheet(PDF) 5 Page - STMicroelectronics |
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74VHC574 Datasheet(HTML) 5 Page - STMicroelectronics |
5 / 14 page 74VHC574 5/14 Table 7: AC Electrical Characteristics (Input tr = tf = 3ns) (*) Voltage range is 3.3V ± 0.3V (**) Voltage range is 5.0V ± 0.5V Note 1: Parameter guaranteed by design. tsoLH = |tpLHm - tpLHn|, tsoHL = |tpHLm - tpHLn| Table 8: 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/8 (per Flip-Flop) 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. tPLH tPHL Propagation Delay Time CH to Q 3.3(*) 15 8.5 13.2 1.0 15.5 1.0 15.5 ns 3.3(*) 50 11.0 16.7 1.0 19.0 1.0 19.0 5.0(**) 15 5.6 8.6 1.0 10.0 1.0 10.0 5.0(**) 50 7.1 10.6 1.0 12.0 1.0 12.0 tPZL tPZH Output Enable Time 3.3(*) 15 8.2 12.8 1.0 15.0 1.0 15.0 ns 3.3(*) 50 10.7 16.3 1.0 18.5 1.0 18.5 5.0(**) 15 5.9 9.0 1.0 10.5 1.0 10.5 5.0(**) 50 7.4 11.0 1.0 12.5 1.0 12.5 tPLZ tPHZ Output Disable Time 3.3(*) 50 11.0 15.0 1.0 17.0 1.0 17.0 ns 3.3(*) 50 7.1 10.1 1.0 11.5 1.0 11.5 tw Clock Pulse Width HIGH or LOW 3.3(*) 5.0 5.0 5.0 ns 5.0(**) 5.0 5.0 5.0 ts Setup Time D to CK HIGH or LOW 3.3(*) 3.5 3.5 3.5 ns 5.0(**) 3.5 3.5 3.5 th Hold Time D to CK HIGH or LOW 3.3(*) 1.5 1.5 1.5 ns 5.0(**) 1.5 1.5 1.5 fMAX Maximum Clock Frequency 3.3(*) 15 80 125 65 65 MHz 3.3(*) 50 50 75 45 45 5.0(**) 15 130 180 110 110 5.0(**) 50 85 115 75 75 tOSLH tOSHL Output to Output Skew time (note 1) 3.3(*) 50 1.5 1.5 1.5 ns 5.0(**) 50 1.0 1.0 1.0 Symbol Parameter Test Condition Value Unit TA = 25°C -40 to 85°C -55 to 125°C Min. Typ. Max. Min. Max. Min. Max. CIN Input Capacitance 710 10 10 pF COUT Output Capacitance 9pF CPD Power Dissipation Capacitance (note 1) 28 pF |
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