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HC273 Datasheet(PDF) 4 Page - System Logic Semiconductor |
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HC273 Datasheet(HTML) 4 Page - System Logic Semiconductor |
4 / 5 page SL74HC273 System Logic Semiconductor SLS AC ELECTRICAL CHARACTERISTICS(C L=50pF,Input t r=tf=6.0 ns) VCC Guaranteed Limit Symbol Parameter V 25 °C to -55 °C ≤85°C ≤125°C Unit fmax Maximum Clock Frequency (50% Duty Cycle) (Figures 1 and 4) 2.0 4.5 6.0 6.0 30 35 5.0 24 28 4.0 20 24 MHz tPLH, tPHL Maximum Propagation Delay, Clock to Q (Figures 1 and 4) 2.0 4.5 6.0 145 29 25 180 36 31 220 44 38 ns tPHL Maximum Propagation Delay , Reset to Q (Figures 2 and 4) 2.0 4.5 6.0 145 29 25 180 36 31 220 44 38 ns tTLH, tTHL Maximum Output Transition Time, Any Output (Figures 1 and 4) 2.0 4.5 6.0 75 15 13 95 19 16 110 22 19 ns CIN Maximum Input Capacitance - 10 10 10 pF Power Dissipation Capacitance (Per Enabled Output) Typical @25 °C,V CC=5.0 V CPD Used to determine the no-load dynamic power consumption: PD=CPDVCC 2f+I CCVCC 48 pF TIMING REQUIREMENTS (C L=50pF,Input t r=tf=6.0 ns) VCC Guaranteed Limit Symbol Parameter V 25 °C to-55°C ≤85°C ≤125°C Unit tSU Minimum Setup Time, Data to Clock (Figure 3) 2.0 4.5 6.0 60 12 10 75 15 13 90 18 15 ns th Minimum Hold Time, Clock to Data (Figure 3) 2.0 4.5 6.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 ns trec Minimum Recovery Time, Reset Inactive to Clock (Figure 2) 2.0 4.5 6.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 ns tw Minimum Pulse Width, Clock (Figure 1) 2.0 4.5 6.0 60 12 10 75 15 13 90 18 15 ns tw Minimum Pulse Width, Reset (Figure 2) 2.0 4.5 6.0 60 12 10 75 15 13 90 18 15 ns tr, tf Maximum Input Rise and Fall Times (Figure 1) 2.0 4.5 6.0 1000 500 400 1000 500 400 1000 500 400 ns |
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