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MM74HC4020N Datasheet(PDF) 4 Page - Fairchild Semiconductor |
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MM74HC4020N Datasheet(HTML) 4 Page - Fairchild Semiconductor |
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4 / 9 page  www.fairchildsemi.com 4 AC Electrical Characteristics VCC = 5V, TA = 25°C, CL = 15 pF, tr = tf = 6 ns Note 6: Typical Propagation delay time to any output can be calculated using: tP = 17 + 12(N–1) ns; where N is the number of the output, QW, at VCC = 5V. AC Electrical Characteristics VCC = 2.0V to 6.0V, CL = 50 pF, tr = tf = 6 ns (unless otherwise specified) Note 7: CPD determines the no load dynamic power consumption, PD = CPD VCC 2 f + I CC VCC, and the no load dynamic current consumption, IS = CPD VCC f + ICC. Symbol Parameter Conditions Typ Guaranteed Units Limit fMAX Maximum Operating Frequency 50 30 MHz tPHL, tPLH Maximum Propagation (Note 6) 17 35 ns Delay Clock to Q tPHL Maximum Propagation 16 40 ns Delay Reset to any Q tREM Minimum Reset 10 20 ns Removal Time tW Minimum Pulse Width 10 16 ns Symbol Parameter Conditions VCC TA = 25°CTA = −40 to 85°CTA = −55 to 125°C Units Typ Guaranteed Limits fMAX Maximum Operating 2.0V 10 6 5 4 MHz Frequency 4.5V 40 30 24 20 6.0V 50 35 28 24 tPHL, tPLH Maximum Propagation 2.0V 80 210 265 313 ns Delay Clock to Q1 4.5V 21 42 53 63 6.0V 18 36 45 53 tPHL, tPLH Maximum Propagation 2.0V 80 125 156 188 ns Delay Between Stages 4.5V 18 25 31 38 from Qn to Qn+1 6.0V 15 21 26 31 tPHL Maximum Propagation 2.0V 72 240 302 358 ns Delay Reset to any Q 4.5V 24 48 60 72 (4020 and 4040) 6.0V 20 41 51 61 tREM Minimum Reset 2.0V 100 126 149 ns Removal Time 4.5V 20 25 50 6.0V 16 21 25 tW Minimum Pulse Width 2.0V 90 100 120 ns 4.5V 16 20 24 6.0V 14 18 20 tTLH, tTHL Maximum 2.0V 30 75 95 110 ns Output Rise 4.5V 10 15 19 22 and Fall Time 6.0V 9 13 16 19 tr, tf Maximum Input Rise and 1000 1000 1000 ns Fall Time 500 500 500 400 400 400 CPD Power Dissipation (per package) 55 pF Capacitance (Note 7) CIN Maximum Input 5 10 10 10 pF Capacitance |
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