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M74HC148B1R Fiches technique(PDF) 5 Page - STMicroelectronics |
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M74HC148B1R Fiches technique(HTML) 5 Page - STMicroelectronics |
5 / 11 page AC ELECTRICAL CHARACTERISTICS (CL =50 pF, Input tr =tf =6 ns) Symbol Parameter Test Conditions Value Unit VCC (V) TA =25 oC 54HC and 74HC -40 to 85 oC 74HC -55 to 125 oC 54HC Min. Typ. Max. Min. Max. Min. Max. tTLH tTHL Output Transition Time 2.0 30 75 95 110 ns 4.5 8 151922 6.0 7 131619 tPLH tPHL Propagation Delay Time (In - A0, A1, A2) 2.0 60 150 190 225 ns 4.5 19 30 38 45 6.0 16 26 32 38 tPLH tPHL Propagation Delay Time (In - EO, GS) 2.0 60 150 190 225 ns 4.5 19 30 38 45 6.0 16 26 32 38 tPLH tPHL Propagation Delay Time (EI - EO) 2.0 40 115 145 175 ns 4.5 14 23 29 35 6.0 12 20 25 30 tPLH tPHL Propagation Delay Time (EI - GS) 2.0 40 115 145 175 ns 4.5 14 23 29 35 6.0 12 20 25 30 tPLH tPHL Propagation Delay Time (EI - A0, A1, A2) 2.0 40 115 145 175 ns 4.5 14 23 29 35 6.0 12 20 25 30 CIN Input Capacitance 5 10 10 10 pF CPD (*) Power Dissipation Capacitance 60 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 INPUT WAVEFORM IS THE SAME AS THAT IN CASE OF SWITCHING CHARACTERISTICS TEST. SWITCHING CHARACTERISTICS TEST CIRCUIT TEST CIRCUIT ICC (Opr.) M54/M74HC148 5/11 |
Numéro de pièce similaire - M74HC148B1R |
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Description similaire - M74HC148B1R |
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