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M74HC595B1R Datasheet(PDF) 7 Page - STMicroelectronics |
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M74HC595B1R Datasheet(HTML) 7 Page - STMicroelectronics |
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7 / 16 page ![]() M74HC595 7/16 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 xVCC xfIN +ICC TEST CIRCUIT CL = 50pF/150pF or equivalent (includes jig and probe capacitance) R1 =1KΩ or equivalent RT =ZOUT of pulse generator (typically 50Ω) ts Minimum Set-up Time (SCRL - RCK) 2.0 50 40 100 125 145 ns 4.5 10 20 25 29 6.0 7 17 21 25 th Minimum Hold Time 2.0 50 00 0 ns 4.5 0 0 0 6.0 0 0 0 tREM Minimum Clear Removal Time 2.0 50 15 50 65 75 ns 4.5 3 10 13 15 6.0 3 9 11 13 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 510 10 10 pF CPD Power Dissipation Capacitance (note 1) 184 pF TEST SWITCH tPLH,tPHL Open tPZL,tPLZ VCC tPZH,tPHZ GND Symbol Parameter Test Condition Value Unit VCC (V) CL (pF) TA = 25°C -40 to 85°C -55 to 125°C Min. Typ. Max. Min. Max. Min. Max. |
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