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MM54C174 Datasheet(PDF) 3 Page - National Semiconductor (TI) |
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MM54C174 Datasheet(HTML) 3 Page - National Semiconductor (TI) |
3 / 4 page AC Electrical Characteristics TA e 25 C CL e 50 pF unless otherwise noted Symbol Parameter Conditions Min Typ Max Units tpd Propagation Delay Time to a Logical VCC e 5V 150 300 ns ‘‘0’’ or Logical ‘‘1’’ from Clock to Q VCC e 10V 70 110 ns tpd Propagation Delay Time to VCC e 5V 110 300 ns a Logical ‘‘0’’ from Clear VCC e 10V 50 110 ns tS1 tS0 Time Prior to Clock Pulse that VCC e 5V 75 ns Data Must be Present VCC e 10V 25 ns tH1 tH0 Time after Clock Pulse VCC e 5V 0 b 10 ns that Data Must be Held VCC e 10V 0 b 50 ns tW Minimum Clock Pulse Width VCC e 5V 50 250 ns VCC e 10V 35 100 ns tW Minimum Clear Pulse Width VCC e 5V 65 140 ns VCC e 10V 35 70 ns tr tf Maximum Clock Rise and VCC e 5V 15 l 1200 m s Fall Time VCC e 10V 50 l 1200 m s fMAX Maximum Clock Frequency VCC e 5V 20 65 MHz VCC e 10V 50 12 MHz CIN Input Capacitance Clear Input (Note 2) 11 pF Any Other Input 50 pF CPD Power Dissipation Capacitance Per Package (Note 3) 95 pF AC Parameters are guaranteed by DC correlated testing Note 1 ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed Except for ‘‘Operating Temperature Range’’ they are not meant to imply that the devices should be operated at these limits The table of ‘‘Electrical Characteristics’’ provides conditions for actual device operation Note 2 Capacitance is guaranteed by periodic testing Note 3 CPD determines the no load AC power consumption of any CMOS device For complete explanation see 54C74C Family Characteristics Application Note AN-90 Switching Time Waveforms CMOS to CMOS TLF5899 – 5 tr e tf e 20 ns AC Test Circuit TLF5899 – 6 3 |
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