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54AC74 Datasheet(PDF) 6 Page - National Semiconductor (TI) |
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54AC74 Datasheet(HTML) 6 Page - National Semiconductor (TI) |
6 / 8 page ![]() AC Electrical Characteristics 54ACT V CC T A = −55˚C Fig. Symbol Parameter (V) to +125˚C Units No. (Note 10) C L =50 pF Min Max f max Maximum Clock 5.0 85 MHz Frequency t PLH Propagation Delay 5.0 1.0 11.5 ns C Dn or SDn to Qn or Qn t PHL Propagation Delay 5.0 1.0 12.5 ns C Dn or SDn to Qn or Qn t PLH Propagation Delay 5.0 1.0 14.0 ns CP n to Qn or Qn t PHL Propagation Delay 5.0 1.0 12.0 ns CP n to Qn or Qn Note 10: Voltage Range 5.0 is 5.0V ±0.5V AC Operating Requirements 54ACT Symbol Parameter V CC T A = −55˚C Units Fig. (V) C L = 50 pF No. (Note 11) Guaranteed Limits t s Set-up Time, HIGH or LOW 5.0 4.0 ns D n to CPn t h Hold Time, HIGH or LOW 5.0 1.0 ns D n to CPn t w CP n or CDn or SDn 5.0 7.0 ns Pulse Width t rec Recovery Time 5.0 0.5 ns C Dn or SDn to CP Note 11: Voltage Range 5.0 is 5.0V ±0.5V Capacitance Symbol Parameter Typ Units Conditions C IN Input Capacitance 4.5 pF V CC = OPEN C PD Power Dissipation 35.0 pF V CC = 5.0V Capacitance www.national.com 6 |