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74F219 Datasheet(PDF) 4 Page - National Semiconductor (TI) |
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74F219 Datasheet(HTML) 4 Page - National Semiconductor (TI) |
4 / 8 page AC Electrical Characteristics 74F 54F 74F TA ea25 CTA ea100 C TA VCC e Com Symbol Parameter VCC ea50V VCC e Mil CL e 50 pF Units CL e 50 pF CL e 50 pF Min Typ Max Min Max Min Max tPLH Access Time HIGH or LOW 100 185 260 90 320 100 270 ns tPHL An to On 80 135 190 80 230 80 200 tPZH Access Time HIGH or LOW 35 60 85 35 105 35 95 tPZL CS to On 50 90 130 50 150 50 140 ns tPHZ Disable Time HIGH or LOW 20 40 60 20 80 20 70 tPLZ CS to On 30 55 80 25 100 30 90 tPZH Write Recovery Time 65 200 280 65 375 65 290 tPZL HIGH or LOW WE to On 65 110 155 65 175 65 165 ns tPHZ Disable Time HIGH or LOW 40 70 100 35 120 40 110 tPLZ WE to On 50 90 130 50 150 50 140 AC Operating Requirements 74F 54F 74F Symbol Parameter TA ea25 CTA ea100 C TA VCC e Com Units VCC ea50V VCC e Mil Min Max Min Max Min Max ts(H) Setup Time HIGH or LOW 0 0 0 ts(L) An to WE 000 ns th(H) Hold Time HIGH or LOW 20 20 20 th(L) An to WE 20 20 20 ts(H) Setup Time HIGH or LOW 100 110 100 ts(L) Dn to WE 100 110 100 ns th(H) Hold Time HIGH or LOW 0 20 0 th(L) Dn to WE 0 20 0 ts(L) Setup Time LOW 000 CS to WE ns th(L) Hold Time LOW 60 75 60 CS to WE tw(L) WE Pulse Width LOW 60 150 60 ns 4 |
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