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M74HC174 Datenblatt(PDF) 5 Page - STMicroelectronics |
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M74HC174 Datenblatt(HTML) 5 Page - STMicroelectronics |
5 / 11 page M74HC174 5/11 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/6 (per FLIP/ FLOP) And the total CPD when N pcs of FLIP-FLOP operate can be gained by the following equation : CPD (total) = 38 + 15 x n 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 (CLOCK - Q) 2.0 68 135 170 205 ns 4.5 17 27 34 41 6.0 14 23 29 35 tPLH tPHL Propagation Delay Time (CLEAR - Q) 2.0 72 145 180 220 ns 4.5 18 29 36 44 6.0 15 25 31 37 fMAX Maximum Clock Frequency 2.0 7.2 14 5.8 4.8 MHz 4.5 36 56 29 24 6.0 42 66 34 28 tW(H) tW(L) Minimum Pulse Width (CLOCK) 2.0 24 75 95 110 ns 4.5 6 151922 6.0 5 131619 tW(L) Minimum Pulse Width (CLEAR) 2.0 24 75 95 110 ns 4.5 6 151922 6.0 5 131619 ts Minimum Set-up Time 2.0 28 75 95 110 ns 4.5 7 151922 6.0 6 131619 th Minimum Hold Time 2.0 0 0 0 ns 4.5 0 0 0 6.0 0 0 0 tREM Minimum Removal Time 2.0 5 5 5 5 ns 4.5 5 5 5 5 6.0 5 5 5 5 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 40 pF |
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