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74LVQ00MTR Datasheet(PDF) 4 Page - STMicroelectronics |
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74LVQ00MTR Datasheet(HTML) 4 Page - STMicroelectronics |
4 / 11 page 74LVQ00 4/11 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/4 (per gate) Figure 3: Test Circuit CL = 50pF or equivalent (includes jig and probe capacitance) RL = 500Ω or equivalent RT = ZOUT of pulse generator (typically 50Ω) 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 2.7 . 6.0 11.0 12.0 14.0 ns 3.3(*) 5.5 8.0 9.0 10.0 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 CPD Power Dissipation Capacitance (note 1) 3.3 fIN = 10MHz 24 pF lvq00.fm Page 4 Thursday, July 29, 2004 2:28 PM |
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