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74LVC374ATTR Datasheet(PDF) 5 Page - STMicroelectronics |
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74LVC374ATTR Datasheet(HTML) 5 Page - STMicroelectronics |
5 / 14 page 74LVC374A 5/14 Table 8: AC Electrical Characteristics 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 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/n (per circuit) Symbol Parameter Test Condition Value Unit VCC (V) CL (pF) RL ( Ω) ts = tr (ns) -40 to 85 °C -55 to 125 °C Min. Max. Min. Max. tPLH tPHL Propagation Delay Time D to Q 1.65 to 1.95 30 1000 2.0 TBD TBD ns 2.3 to 2.7 30 500 2.0 TBD TBD 2.7 50 500 2.5 1.5 7.8 1.5 9.4 3.0 to 3.6 50 500 2.5 1 6.8 1 8.2 tPLH tPHL Propagation Delay Time LE to Q 1.65 to 1.95 30 1000 2.0 TBD TBD ns 2.3 to 2.7 30 500 2.0 TBD TBD 2.7 50 500 2.5 1.5 7.8 1.5 9.4 3.0 to 3.6 50 500 2.5 1 6.8 1 8.2 tPZL tPZH Output Enable Time 1.65 to 1.95 30 1000 2.0 TBD TBD ns 2.3 to 2.7 30 500 2.0 TBD TBD 2.7 50 500 2.5 1 8.7 1 10.4 3.0 to 3.6 50 500 2.5 1 7.7 1 9.2 tPLZ tPHZ Output Disable Time 1.65 to 1.95 30 1000 2.0 TBD TBD ns 2.3 to 2.7 30 500 2.0 TBD TBD 2.7 50 500 2.5 2 7.6 2 9.1 3.0 to 3.6 50 500 2.5 2 7.0 2 8.4 tW LE Pulse Width HIGH 1.65 to 1.95 30 1000 2.0 TBD TBD ns 2.3 to 2.7 30 500 2.0 TBD TBD 2.7 50 500 2.5 3.3 3.3 3.0 to 3.6 50 500 2.5 3.3 3.3 ts Setup Time D to LE (HIGH to LOW) 1.65 to 1.95 30 1000 2.0 TBD TDB ns 2.3 to 2.7 30 500 2.0 TBD TBD 2.7 50 500 2.5 2 2 3.0 to 3.6 50 500 2.5 2 2 th Hold Time D to CLOCK, HIGH or LOW 1.65 to 1.95 30 1000 2.0 TBD TBD ns 2.3 to 2.7 30 500 2.0 TBD TBD 2.7 50 500 2.5 1.5 1.5 3.0 to 3.6 50 500 2.5 1.5 1.5 tOSLH tOSHL Output To Output Skew Time (note1, 2) 2.7 to 3.6 1 1 ns Symbol Parameter Test Condition Value Unit VCC (V) TA = 25 °C Min. Typ. Max. CIN Input Capacitance 4pF CPD Power Dissipation Capacitance (note 1) 1.8 fIN = 10MHz 28 pF 2.5 30 3.3 34 |
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