Datenblatt-Suchmaschine für elektronische Bauteile |
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74AC541 Datenblatt(PDF) 4 Page - STMicroelectronics |
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74AC541 Datenblatt(HTML) 4 Page - STMicroelectronics |
4 / 8 page CAPACITIVE CHARACTERISTICS Symbo l Parameter Test Con dition s Value Uni t VCC (V) T A =25 oC -40 to 85 oC Mi n. T yp. Max. Min. Max. CIN Input Capacitance 5.0 4 pF COUT Output Capacitance 5.0 8 pF CPD Power Dissipation Capacitance (note 1) 5.0 21 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/8 (per circuit) AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, RL = 500 Ω, Input tr =tf =3 ns) Symb ol Parameter T est Con ditio n Valu e Un it VCC (V) TA =25 oC -40 to 85 oC Min. T yp. Max. Mi n. Max. tPLH tPHL Propagation Delay Time 3.3 (*) 1.5 5 8 1.5 9 ns 5.0 (**) 1.546.5 1.5 7 tPZL tPZH Output Enable Time 3.3 (*) 1.5 7 10.5 1.5 11.5 ns 5.0 (**) 1.5 5 8 1.5 8.5 tPLZ tPHZ Output Disable Time 3.3 (*) 1.5 7 10.5 1.5 11.5 ns 5.0 (**) 1.5 6 9 1.5 9.5 (*) Voltage range is 3.3V ± 0.3V (**) Voltage range is 5V ± 0.5V TEST CIRCUIT T EST SW IT CH tPLH,tPHL Open tPZL,tPLZ 2VCC tPZH,tPHZ Open CL = 50 pF or equivalent (includes jigand probe capacitance) RL =R1 =500 Ω orequivalent RT =ZOUT of pulse generator (typically 50 Ω) 74AC541 4/8 |
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