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7 / 17 page 74VCXHQ163245 7/17 Table 8: Dynamic Switching Characteristics Table 9: AC Electrical Characteristics (CLA = 10pF, CLB = 30pF, RL = 500Ω) 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 Symbol Parameter Test Condition Value Unit VCCB (V) VCCA (V) TA = 25 °C -40 to 85 °C Min. Typ. Max. Min. Max. VOLPA Dynamic Low Level Quiet An Output 1.8 2.5 CL =10pF VIL =0V VIH =VCCB 0.15 V 1.8 3.3 0.20 2.5 3.3 0.20 VOLPB Dynamic Low Level Quiet Bn Output 1.8 2.5 CL =30pF VIL =0V VIH =VCCA 0.25 V 1.8 3.3 0.25 2.5 3.3 0.60 VOLVA Dynamic Low Level Quiet An Output 1.8 2.5 CL =10pF VIL =0V VIH =VCCB -0.15 V 1.8 3.3 -0.20 2.5 3.3 -0.20 VOLVB Dynamic Low Level Quiet Bn Output 1.8 2.5 CL =30pF VIL =0V VIH =VCCA -0.25 V 1.8 3.3 -0.25 2.5 3.3 -0.60 VOHVA Dynamic High Level Quiet An Output 1.8 2.5 CL =10pF VIL =0V VIH =VCCB 2.35 V 1.8 3.3 3.10 2.5 3.3 3.10 VOHVB Dynamic High Level Quiet Bn Output 1.8 2.5 CL =30pF VIL =0V VIH =VCCA 1.70 V 1.8 3.3 1.70 2.5 3.3 2.00 Symbol Parameter Test Condition TA = -40 to 85 °C Unit VCCB= 1.8 ± 0.15V VCCB= 1.8 ± 0.15V VCCB= 2.5 ± 0.2V VCCA= 2.5 ± 0.2V VCCA= 3.3 ± 0.3V VCCA= 3.3 ± 0.3V Min. Max. Min. Max. Min. Max. tPLH tPHL Propagation Delay Time An to Bn 1.0 5.5 1.0 5.0 1.0 4.4 ns tPLH tPHL Propagation Delay Time Bn to An 1.0 7.7 1.0 6.5 1.0 6.0 tPZL tPZH Output Enable Time G to An 1.0 8.5 1.0 7.1 1.0 6.5 ns tPZL tPZH Output Enable Time G to Bn 1.0 7.0 1.0 7.0 1.0 5.0 tPLZ tPHZ Output Disable Time G to An 1.0 5.0 1.0 5.0 1.0 4.5 ns tPLZ tPHZ Output Disable Time G to Bn 1.0 5.0 1.0 5.0 1.0 4.5 tOSLH tOSHL Output To Output Skew Time (note1, 2) 0.5 0.5 0.75 ns |
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