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M54HC7240C1R Datasheet(PDF) 6 Page - STMicroelectronics |
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M54HC7240C1R Datasheet(HTML) 6 Page - STMicroelectronics |
6 / 12 page AC ELECTRICAL CHARACTERISTICS (CL =50 pF, Input tr =tf =6 ns) Symbol Parameter Test Conditions Value Unit VCC (V) CL (pF) 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 50 25 60 75 ns 4.5 7 12 19 6.0 6 10 13 tPLH tPHL Propagation Delay Time 2.0 50 50 125 155 ns 4.5 15 25 31 6.0 13 21 26 tPZL tPZH Output Enable Time 2.0 50 RL =1K Ω 68 150 190 ns 4.5 21 30 38 6.0 16 26 32 tPLZ tPHZ Output Disable Time 2.0 50 RL =1K Ω 48 150 190 ns 4.5 21 30 38 6.0 19 26 32 CIN Input Capacitance 5 10 10 10 pF COUT Output Capacitance 10 pF CPD (*) Power Dissipation Capacitance HC7240 HC7241/7244 33 34 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/8 (per channel) TEST CIRCUIT ICC (Opr.) M54/M74HC7240/7241/7244 6/12 |
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