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74VHCT74ATTR Datasheet(PDF) 4 Page - STMicroelectronics |
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74VHCT74ATTR Datasheet(HTML) 4 Page - STMicroelectronics |
4 / 10 page 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 CK to Q or Q 5.0 (*) 15 5.8 7.8 1.0 9.0 ns 5.0 (*) 50 6.3 8.8 1.0 10.0 tPLH tPHL Propagation Delay Time PR or CLR to Q or Q 5.0 (*) 15 7.6 10.4 1.0 12.0 ns 5.0 (*) 50 8.1 11.4 1.0 13.0 tw CK Pulse Width HIGH or LOW 5.0 (*) 5.0 5.0 ns tw PR or CLR Pulse Width LOW 5.0 (*) 5.0 5.0 ns ts Setup Time D to CK HIGH or LOW 5.0 (*) 5.0 5.0 ns th Hold Time D to CK HIGH or LOW 5.0 (*) 0.0 0.0 ns tREM Removal Time CLR or PR to CK 5.0 (*) 3.5 3.5 ns fMAX Maximum Clock Frequency 5.0 (*) 15 100 160 80 MHz 5.0 (*) 50 80 140 65 (*) Voltage range is 5V ± 0.5V 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) 10.5 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 Gate) 74VHCT74A 4/10 |
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