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54F189DL Scheda tecnica(PDF) 4 Page - National Semiconductor (TI) |
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54F189DL Scheda tecnica(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 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 ns tPZL CS to On 50 90 130 50 150 50 140 tPHZ Disable Time HIGH or LOW 20 40 60 20 80 20 70 ns tPLZ CS to On 30 55 80 25 100 30 90 tPZH Write Recovery Time 65 150 280 65 375 65 290 ns tPZL HIGH or LOW WE to On 65 110 155 65 175 65 165 tPHZ Disable Time HIGH or LOW 40 70 100 35 120 40 110 ns tPLZ WE to On 50 90 130 50 150 50 140 AC Operating Requirements 74F 54F 74F Symbol Parameter TA ea25 C TA VCC e Mil TA VCC e Com Units VCC ea50V Min Max Min Max Min Max ts(H) Setup Time HIGH or LOW 0 0 0 ts(L) An to WE 000 th(H) Hold Time HIGH or LOW 20 20 20 ns 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 th(H) Hold Time HIGH or LOW 0 20 0 ns th(L) Dn to WE 0 20 0 ts(L) Setup Time LOW 000 CS to WE th(L) Hold Time LOW 60 75 60 ns CS to WE tw(L) WE Pulse Width LOW 60 150 60 ns TA eb55 Cto a125 C 4 |
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