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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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M54HC173 датащи(PDF) 6 Page - STMicroelectronics |
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M54HC173 датащи(HTML) 6 Page - STMicroelectronics |
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6 / 12 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. tREM Minimum Removal Time 2.0 50 555 ns 4.5 5 5 5 6.0 5 5 5 CIN Input Capacitance 5 10 10 10 pF CPD (*) Power Dissipation Capacitance 50 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/4 (per circuit) SWITCHING CHARACTERISTICS TEST WAVEFORM EACH FLIP-FLOP SHALL BE SET HIGH WHEN SWITCH IS CONNECTED TO GND LINE AND IT SHALL BE SET LOW WHEN SWITCH IS M54/M74HC173 6/12 |
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