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74FR900 Datasheet(PDF) 4 Page - Fairchild Semiconductor |
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74FR900 Datasheet(HTML) 4 Page - Fairchild Semiconductor |
4 / 6 page www.fairchildsemi.com 4 AC Electrical Characteristics AC Operating Requirements Extended AC Electrical Characteristics Symbol Parameter TA = +25°CTA = 0°C to +70°C Units VCC = +5.0V VCC = +5.0V CL = 50 pF CL = 50 pF Min Typ Max Min Max tPLH Propagation Delay tPHL An or Bn to Cn 2.0 4.2 7.0 2.0 7.0 ns Cn to An or Bn tPLH Propagation Delay 2.5 4.8 7.5 2.5 7.5 ns tPHL C8 to A8 or B8 (PINV HIGH) tPLH Propagation Delay 4.5 6.4 10.0 4.5 10.0 ns tPHL An to Bn, Bn to An tPLH Propagation Delay 4.5 6.8 10.0 4.5 10.0 ns tPHL LEAC to Cn, LEBC to Cn tPLH Propagation Delay 3.0 6.0 9.5 3.0 9.5 ns tPHL LECA to An, LECB to Bn tPLH Propagation Delay 3.0 6.0 10.0 3.0 10.0 ns tPHL S0 to Cn tPLH Propagation Delay 3.5 6.5 11.0 3.5 11.0 ns tPHL S1 to An or Bn tPLH Propagation Delay 2.0 5.0 9.0 2.0 9.0 ns tPHL PINV to A8 or B8 tPZH Output Enable Time 2.0 4.0 6.5 2.0 6.5 ns tPZL An, Cn tPHZ Output Disable Time 1.5 4.0 6.0 1.5 6.0 ns tPLZ An, Cn tPZH Output Enable Time 2.0 5.0 7.0 2.0 7.0 ns tPZL Bn tPHZ Output Disable Time 2.0 5.0 7.0 2.0 7.0 ns tPLZ Bn Symbol Parameter TA = +25°CTA = 0°C to +70°C Units VCC = +5.0V VCC = +5.0V CL = 50 pF CL = 50 pF Min Typ Max Min Max tS(H) Setup Time, HIGH or LOW 4.0 2.0 4.0 ns tS(L) An to LEAC, Bn to LEBC tH(H) Hold Time, HIGH or LOW 1.0 −2.0 1.0 ns tH(L) An to LEAC, Bn to LEBC tS(H) Setup Time, HIGH or LOW 3.0 1.0 3.0 ns tS(L) Cn to LECA or LECB tH(H) Hold Time, HIGH or LOW 1.0 −1.0 1.0 ns tH(L) Cn to LECA or LECB tW(H) LE Pulse Width LOW 8.0 4.0 8.0 ns Symbol Parameter TA = 0°C to +70°CTA = 0°C to +70°C Units VCC = +5.0V VCC = +5.0V CL = 50 pF CL = 250 pF Nine Outputs Switching (Note 6) (Note 5) Min Max Min Max tPLH Propagation Delay |
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