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74LVQ74 Datasheet(PDF) 4 Page - STMicroelectronics |
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74LVQ74 Datasheet(HTML) 4 Page - STMicroelectronics |
4 / 13 page 74LVQ74 4/13 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 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 CK to Q 2.7 7.7 12.0 14.0 16.0 ns 3.3(*) 6.3 9.0 10.5 12.0 tPLH tPHL Propagation Delay Time PR or CLR to Q 2.7 6.9 12.0 14.0 16.0 ns 3.3(*) 5.8 9.0 10.5 12.0 tw Pulse Width CK, HIGH or LOW 2.7 4.0 1.5 4.0 5.0 ns 3.3(*) 3.0 1.5 3.0 4.0 tw(L) Pulse Width PR or CLR, LOW 2.7 4.0 1.5 4.0 5.0 ns 3.3(*) 3.0 1.5 3.0 4.0 ts Setup Time D to CK HIGH or LOW 2.7 4.0 -0.2 4.0 5.0 ns 3.3(*) 3.0 -0.2 3.0 4.0 th Hold Time D to CK HIGH or LOW 2.7 2.0 0.2 2.0 2.0 ns 3.3(*) 2.0 0.2 2.0 2.0 tREM Recovery Time PR or CLR to Q 2.7 1.0 -1.0 1.0 1.0 ns 3.3(*) 1.0 -1.0 1.0 1.0 fMAX Maximum Clock Frequency 2.7 100 200 100 80 MHz 3.3(*) 120 250 120 100 tOSLH tOSHL Output To Output Skew Time (note1, 2) 2.7 0.2 1.0 1.0 1.0 ns 3.3(*) 0.2 1.0 1.0 1.0 |
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