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74HC595 데이터시트(PDF) 7 Page - STMicroelectronics |
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74HC595 데이터시트(HTML) 7 Page - STMicroelectronics |
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7 / 13 page ![]() AC ELECTRICAL CHARACTERISTICS (CL =50 pF, Input tr =tf =6 ns) Symbol Parameter Test Conditions Value Unit VCC (V) CL (pF) TA =25 oC 54HC and 74HC -40 to 85 oC 74HC -55 to 125 oC 54HC Min. Typ. Max. Min. Max. Min. Max. ts Minimum Set-up Time (SCK - RCK) 2.0 50 35 75 95 110 ns 4.5 8 151922 6.0 6 131619 ts Minimum Set-up Time (SCRL - RCK) 2.0 50 40 100 125 145 ns 4.5 10 20 25 29 6.0 7 172125 th Minimum Hold Time 2.0 50 000 ns 4.5 0 0 0 6.0 0 0 0 tREM Minimum Clear Remuval Time 2.0 50 15 50 65 75 ns 4.5 3 101315 6.0 3 9 11 13 CIN Input Capacitance 5 10 10 10 pF CPD (*) Power Dissipation Capacitance 184 pF (*) 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 operting current can be obtained by the following equation. ICC(opr) = CPD •VCC •fIN +ICC SWITCHING CHARACTERISTICS TEST WAVEFORM WAVEFORM 1 WAVEFORM 2 M54/M74HC595 7/13 |
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