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74VHCT139A 数据表(PDF) 4 Page - STMicroelectronics |
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74VHCT139A 数据表(HTML) 4 Page - STMicroelectronics |
4 / 8 page CAPACITIVE CHARACTERISTICS Symb ol Parameter T est Cond ition s Val ue Un it TA =25 oC -40 to 85 oC Min. Typ . Max. Min . Max. CIN Input Capacitance 4 10 10 pF CPD Power Dissipation Capacitance (note 1) 26 pF 1) CPD isdefined as the value of the IC’sinternal equivalent capacitance which is calculated fromthe operating current consumption without load. (Referto Test Circuit).Average operating current can be obtained by the following equation. ICC(opr) = CPD • VCC • fIN +ICC/2 (per Decoder) AC ELECTRICAL CHARACTERISTICS (Input tr =tf =3 ns) Symb ol Parameter Test Co nditi on Val ue Un it VCC (V) CL (pF ) TA =25 oC -40 to 85 oC Min. Typ . Max. Min . Max. tPLH tPHL Propagation Delay Time A, B, to Y 5.0 (*) 15 7.2 11.0 1.0 13.0 ns 5.0 (*) 50 9.7 14.5 1.0 16.5 tPLH tPHL Propagation Delay Time Gto Y 5.0 (*) 15 6.4 9.2 1.0 11.0 ns 5.0 (*) 50 8.9 12.7 1.0 14.5 (*) Voltage range is 5V ± 0.5V TEST CIRCUIT CL = 15/50 pF or equivalent (includes jig and probe capacitance) RT =ZOUT of pulse generator (typically 50 Ω) 74VHCT139A 4/8 |
类似零件编号 - 74VHCT139A |
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类似说明 - 74VHCT139A |
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