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74LVQ138MTR Arkusz danych(PDF) 4 Page - STMicroelectronics |
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74LVQ138MTR Arkusz danych(HTML) 4 Page - STMicroelectronics |
4 / 12 page 74LVQ138 4/12 Table 7: Dynamic Switching Characteristics 1) Worst case package. 2) Max number of outputs defined as (n). Data inputs are driven 0V to 3.3V, (n-1) outputs switching and one output at GND. 3) Max number of data inputs (n) switching. (n-1) switching 0V to 3.3V. Inputs under test switching: 3.3V to threshold (VILD), 0V to threshold (VIHD), f=1MHz. 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 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. VOLP Dynamic Low Voltage Quiet Output (note 1, 2) 3.3 CL = 50 pF 0.2 0.8 V VOLV -0.8 -0.2 VIHD Dynamic High Voltage Input (note 1, 3) 3.3 2 V VILD Dynamic Low Voltage Input (note 1, 3) 3.3 0.8 V 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 A, B, C to Y 2.7 6.6 10.5 12.0 14.0 ns 3.3(*) 5.5 8.0 9.0 10.5 tPLH tPHL Propagation Delay Time G1 to Y 2.7 6.7 10.5 12.0 14.0 ns 3.3(*) 5.6 8.0 9.0 10.5 tPLH tPHL Propagation Delay Time G2A or G2B to Y 2.7 6.3 10.5 12.0 14.0 ns 3.3(*) 5.2 8.0 9.0 10.5 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 = 10MH 50 pF |
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