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M74HC181B1R Datasheet(PDF) 8 Page - STMicroelectronics |
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M74HC181B1R Datasheet(HTML) 8 Page - STMicroelectronics |
8 / 13 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 Min. Typ. Max. Min. Max. tTLH tTHL Output Transition Time 2.0 30 75 95 ns 4.5 8 15 19 6.0 7 13 16 tPLH tPHL Propagation Delay Time (1) 2.0 54 120 150 ns 4.5 16 24 30 6.0 13 20 26 tPLH tPHL Propagation Delay Time (2) 2.0 90 215 270 ns 4.5 26 43 54 6.0 20 37 46 tPLH tPHL Propagation Delay Time (3) 2.0 97 215 270 ns 4.5 27 43 54 6.0 21 37 46 tPLH tPHL Propagation Delay Time (4) 2.0 80 180 225 ns 4.5 23 36 45 6.0 18 31 38 tPLH tPHL Propagation Delay Time (5) 2.0 81 190 240 ns 4.5 24 38 48 6.0 19 32 41 tPLH tPHL Propagation Delay Time (6) 2.0 80 180 225 ns 4.5 23 36 45 6.0 18 31 38 tPLH tPHL Propagation Delay Time (7) 2.0 80 170 215 ns 4.5 23 34 43 6.0 18 29 37 tPLH tPHL Propagation Delay Time (8) 2.0 80 170 215 ns 4.5 23 34 43 6.0 18 29 37 tPLH tPHL Propagation Delay Time (9) 2.0 95 220 275 ns 4.5 27 44 55 6.0 21 37 47 tPLH tPHL Propagation Delay Time (10) 2.0 95 220 275 ns 4.5 27 44 55 6.0 21 37 47 tPLH tPHL Propagation Delay Time (11) 2.0 86 200 250 ns 4.5 24 40 50 6.0 18 34 43 tPLZ tPZL Propagation Delay Time (12) 2.0 RL =1k Ω 92 210 265 ns 4.5 27 42 53 6.0 27 36 45 CIN Input Capacitance 5 10 10 pF CPD (*) Power Dissipation Capacitance 195 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 M74HC181 8/13 |
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