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M74HC77 Datasheet(PDF) 5 Page - STMicroelectronics |
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M74HC77 Datasheet(HTML) 5 Page - STMicroelectronics |
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5 / 10 page ![]() M74HC77 5/10 AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6ns) CAPACITIVE CHARACTERISTICS 1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/4(per LATCH) Symbol Parameter Test Condition Value Unit VCC (V) TA = 25°C -40 to 85°C -55 to 125°C Min. Typ. Max. Min. Max. Min. Max. tTLH tTHL Output Transition Time 2.0 30 75 95 110 ns 4.5 8 151922 6.0 7 131619 tPLH tPHL Propagation Delay Time (D - Q) 2.0 39 100 125 150 ns 4.5 13 20 25 30 6.0 11 17 21 26 tPLH tPHL Propagation Delay Time (G-Q) 2.0 39 100 125 150 ns 4.5 13 20 25 30 6.0 11 17 21 26 tW(H) Minimum Pulse Width (G) 2.0 15 75 95 110 ns 4.5 6 151922 6.0 6 131619 ts Minimum Set-up Time 2.0 15 50 65 75 ns 4.5 3 101315 6.0 3 9 11 13 th Minimum Hold Time 2.0 25 30 40 ns 4.5 5 6 8 6.0 4 5 7 Symbol Parameter Test Condition Value Unit VCC (V) TA = 25°C -40 to 85°C -55 to 125°C Min. Typ. Max. Min. Max. Min. Max. CIN Input Capacitance 5.0 5 101010 pF CPD Power Dissipation Capacitance (note 1) 5.0 20 pF |
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