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74F251ASC 数据表(PDF) 4 Page - National Semiconductor (TI) |
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74F251ASC 数据表(HTML) 4 Page - National Semiconductor (TI) |
4 / 8 page AC Electrical Characteristics 74F 54F 74F TA ea25 C TA VCC e Mil TA VCC e Com Symbol Parameter VCC ea50V CL e 50 pF CL e 50 pF Units CL e 50 pF Min Typ Max Min Max Min Max tPLH Propagation Delay 35 60 90 35 115 35 95 ns tPHL Sn to Z 32 50 75 32 80 32 75 tPLH Propagation Delay 45 75 105 35 140 45 125 ns tPHL Sn to Z 40 60 85 30 105 40 90 tPLH Propagation Delay 30 50 65 25 80 30 70 ns tPHL In to Z 15 25 40 15 60 15 50 tPLH Propagation Delay 35 50 70 25 90 25 80 ns tPHL In to Z 35 55 70 35 90 35 75 tPZH Output Enable Time 25 43 60 20 70 25 70 tPZL OE to Z 25 43 60 25 75 25 65 ns tPHZ Output Disable Time 25 40 55 25 60 25 60 tPLZ OE to Z 15 30 45 15 50 15 45 tPZH Output Enable Time 35 50 70 30 85 30 75 tPZL OE to Z 35 55 75 35 90 35 80 ns tPHZ Output Disable Time 20 38 55 20 55 20 55 tPLZ OE to Z 15 30 45 15 55 15 45 4 |
类似零件编号 - 74F251ASC |
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类似说明 - 74F251ASC |
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