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MM74HC123AM Datasheet(PDF) 4 Page - Rochester Electronics |
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MM74HC123AM Datasheet(HTML) 4 Page - Rochester Electronics |
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4 / 4 page  74HC123A Specification Number 74HC123-I (F) Rev C Page 4 of 4 www.fairchildsemi.com 4 AC Electrical Characteristics VCC = 5V, TA = 25°C, CL = 15 pF, tr = tf = 6 ns AC Electrical Characteristics CL = 50 pF tr = tf = 6 ns (unless otherwise specified) Note 5: CPD determines the no load dynamic power consumption, PD = CPD VCC2 f + ICC VCC, and the no load dynamic current consumption, IS = CPD VCC f + ICC. Symbol Parameter Conditions Typ Limit Units tPLH Maximum Trigger Propagation Delay 22 33 ns A, B or Clear to Q tPHL Maximum Trigger Propagation Delay 25 42 ns A, B or Clear to Q tPHL Maximum Propagation Delay, Clear to Q 20 27 ns tPLH Maximum Propagation Delay, Clear to Q 22 33 ns tW Minimum Pulse Width, A, B or Clear 14 26 ns tREM Minimum Clear Removal Time 0 ns tWQ(MIN) Minimum Output Pulse Width CEXT = 28 pF 400 ns REXT = 2 kΩ tWQ Output Pulse Width CEXT = 1000 pF 10 µs REXT = 10 kΩ Symbol Parameter Conditions VCC TA = 25°CTA = −40 to 85°CTA = −55 to 125°C Units Typ Guaranteed Limits tPLH Maximum Trigger Propagation 2.0V 77 169 194 210 ns Delay, A, B or Clear to Q 4.5V 26 42 51 57 ns 6.0V 21 32 39 44 ns tPHL Maximum Trigger Propagation 2.0V 88 197 229 250 ns Delay, A, B or Clear to Q 4.5V 29 48 60 67 ns 6.0V 24 38 46 51 ns tPHL Maximum Propagation Delay 2.0V 54 114 132 143 ns Clear to Q 4.5V 23 34 41 45 ns 6.0V 19 28 33 36 ns tPLH Maximum Propagation Delay 2.0V 56 116 135 147 ns Clear to Q 4.5V 25 36 42 46 ns 6.0V 20 29 34 37 ns tW Minimum Pulse Width 2.0V 57 123 144 157 ns A, B, Clear 4.5V 17 30 37 42 ns 6.0V 12 21 27 30 ns tREM Minimum Clear 2.0V 0 0 0 ns Removal Time 4.5V 0 0 0 ns 6.0V 0 0 0 ns tTLH, tTHL Maximum Output 2.0V 30 75 95 110 ns Rise and Fall Time 4.5V 8 15 19 22 ns 6.0V 7 13 16 19 ns tWQ(MIN) Minimum Output CEXT = 28 pF 2.0V 1.5 µs Pulse Width REXT = 2 kΩ 4.5V 450 ns REXT = 6 kΩ (VCC = 2V) 6.0V 380 ns tWQ Output Pulse Width CEXT = 0.1 µF Min 5.0V 1 0.9 0.86 0.85 ms REXT = 10 kΩ Max 5.0V 1 1.1 1.14 1.15 ms CIN Maximum Input 12 20 20 20 pF Capacitance (Pins 7 & 15) CIN Maximum Input 6 10 10 10 pF Capacitance (other inputs) CPD Power Dissipation (Note 5) 70 pF Capacitance Rochester Electronics guarantees performance of its semiconductor products to the original OEM specifications. “Typical” values are for reference purposes only. Certain minimum or maximum ratings may be based on product characterization, design, simulation, or sample testing. Rochester Electronics reserves the right to make changes without further notice to any specification herein. |
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