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74AC14M Fiches technique(PDF) 4 Page - STMicroelectronics |
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74AC14M Fiches technique(HTML) 4 Page - STMicroelectronics |
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4 / 7 page ![]() CAPACITIVE CHARACTERISTICS Symbol Parameter Test Con dition s Value Unit VCC (V) TA =25 oC-40 to 85 oC Mi n. Typ. Max. Min . Max. CIN Input Capacitance 5.0 4 pF CPD Power Dissipation Capacitance (note 1) 5.0 35 pF 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 • VCC • fIN +ICC/n (per circuit) TEST CIRCUIT CL = 50 pF or equivalent (includes jig and probe capacitance) RL =R1 = 500 Ω or equivalent RT =ZOUT of pulse generator (typically 50 Ω) WAVEFORM: PROPAGATION DELAYS (f=1MHz) 74AC14 4/7 |
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