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M74HC259B1R Datasheet(PDF) 5 Page - STMicroelectronics |
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M74HC259B1R Datasheet(HTML) 5 Page - STMicroelectronics |
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5 / 13 page  M74HC259 5/13 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 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 (DATA - Q) 2.0 56 140 175 210 ns 4.5 18 28 35 42 6.0 15 24 30 36 tPLH tPHL Propagation Delay Time (A, B, C - Q) 2.0 76 190 240 285 ns 4.5 24 38 48 57 6.0 20 32 41 48 tPLH tPHL Propagation Delay Time (G - Q) 2.0 57 150 190 225 ns 4.5 19 30 38 45 6.0 16 26 32 38 tPLH tPHL Propagation Delay Time (CLEAR - Q) 2.0 45 115 145 175 ns 4.5 15 23 29 35 6.0 13 20 25 30 tW(L) Minimum Pulse Width (ENABLE) 2.0 28 75 90 115 ns 4.5 7 151923 6.0 6 131620 tW(L) Minimum Pulse Width (CLEAR) 2.0 24 75 90 115 ns 4.5 6 151923 6.0 5 131620 ts Minimum Set-up Time (DATA) 2.0 12 50 60 75 ns 4.5 3 101215 6.0 3 9 11 13 ts Minimum Set-up Time (A, B, C) 2.0 25 30 40 ns 4.5 5 6 8 6.0 5 5 7 th Minimum Hold Time (DATA) 2.0 5 5 5 ns 4.5 5 5 5 6.0 5 5 5 th Minimum Hold Time (A, B, C) 2.0 0 0 0 ns 4.5 0 0 0 6.0 0 0 0 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 66 pF |
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