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74LVQ374MTR Datenblatt(PDF) 5 Page - STMicroelectronics |
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74LVQ374MTR Datenblatt(HTML) 5 Page - STMicroelectronics |
5 / 13 page 74LVQ374 5/13 Table 8: AC Electrical Characteristics (CL = 50 pF, RL = 500 Ω, Input tr = tf = 3ns) 1) Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs of the same device switch- ing in the same direction, either HIGH or LOW (tOSLH = |tPLHm - tPLHn|, tOSHL = |tPHLm - tPHLn|) 2) Parameter guaranteed by design (*) Voltage range is 3.3V ± 0.3V Table 9: 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) TA = 25°C -40 to 85°C -55 to 125°C Min. Typ. Max. Min. Max. Min. Max. tPLH tPHL Propagation Delay Time CK to Q 2.7 7.7 12.0 14.0 16.0 ns 3.3(*) 6.3 9.0 10.5 12.0 tPLZ tPHZ Output Disable Time 2.7 8.8 13.0 15.0 17.0 ns 3.3(*) 7.2 10.0 11.5 13.0 tPZL tPZH Output Enable Time 2.7 9.2 13.0 15.0 17.0 ns 3.3(*) 7.2 10.0 11.5 13.0 tW Clock Pulse Width HIGH 2.7 4.0 1.5 4.0 4.0 ns 3.3(*) 3.0 1.1 3.0 3.0 tsL tsH Setup Time D to CK, HIGH or LOW 2.7 3.0 0.0 3.0 3.0 ns 3.3(*) 2.0 0.0 2.0 2.0 thL thH Hold Time CK to D, HIGH or LOW 2.7 1.0 0.0 1.0 1.0 ns 3.3(*) 1.5 0.0 1.5 1.5 fMAX Maximum Clock Frequency 2.7 100 150 80 60 MHz 3.3(*) 120 180 100 80 tOSLH tOSHL Output To Output Skew Time (note1, 2) 2.7 0.5 1.0 1.0 1.0 ns 3.3(*) 0.5 1.0 1.0 1.0 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 3.3 4 pF COUT Output Capacitance 3.3 7 pF CPD Power Dissipation Capacitance (note 1) 3.3 fIN = 10MHz 15 pF |
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