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74F543 Datasheet(PDF) 4 Page - Fairchild Semiconductor |
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74F543 Datasheet(HTML) 4 Page - Fairchild Semiconductor |
4 / 7 page www.fairchildsemi.com 4 AC Electrical Characteristics AC Operating Requirements Symbol Parameter TA = +25°C Units VCC = +5.0V TA = 0°C to +70°C CL = 50 pF CL = 50 pF Min Typ Max Min Max tPLH Propagation Delay 3.0 5.5 7.5 3.0 8.5 tPHL Transparent Mode 3.0 5.0 6.5 3.0 7.5 ns An to Bn or Bn to An tPLH Propagation Delay 4.5 8.5 11.0 4.5 12.5 ns tPHL LEBA to An 4.5 8.5 11.0 4.5 12.5 tPLH Propagation Delay 4.5 8.5 11.0 4.5 12.5 ns tPHL LEAB to Bn 4.5 8.5 11.0 4.5 12.5 tPZH Output Enable Time tPZL OEBA or OEAB to An or Bn 3.0 7.0 9.0 3.0 10.0 CEBA or CEAB to An or Bn 4.0 7.5 10.5 4.0 12.0 ns tPHZ Output Disable Time tPLZ OEBA or OEAB to An or Bn 1.0 6.0 8.0 1.0 9.0 CEBA or CEAB to An or Bn 2.5 5.5 10.5 2.5 11.5 Symbol Parameter TA = +25°C Units VCC = +5.0V TA = 0°C to +70°C Min Max Min Max tS(H) Setup Time, HIGH or LOW 3.0 3.5 tS(L) An or Bn to LEBA or LEAB 3.0 3.5 ns tH(H) Hold Time, HIGH or LOW 3.0 3.5 tH(L) An or Bn to LEBA or LEAB 3.0 3.5 tW(L) Latch Enable, B to A or 8.0 9.0 ns B to A Pulse Width, LOW |
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