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M54HC368B1R Datasheet(PDF) 5 Page - STMicroelectronics |
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M54HC368B1R Datasheet(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) 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 90 ns 4.5 7 121518 6.0 6 101315 tPLH tPHL Propagation Delay Time 2.0 50 30 85 105 130 ns 4.5 10 17 21 26 6.0 9 141822 2.0 150 42 105 130 160 ns 4.5 14 21 26 32 6.0 12 18 22 27 tPZL tPZH Output Enable Time 2.0 50 RL =1 K Ω 36 90 115 135 ns 4.5 11 18 23 27 6.0 9 152023 2.0 150 RL =1 K Ω 49 110 140 165 ns 4.5 15 22 28 33 6.0 13 19 24 28 tPLZ tPHZ Output Disable Time 2.0 50 RL =1 K Ω 32 95 120 145 ns 4.5 14 19 24 29 6.0 12 16 20 25 CIN Input Capacitance 5 10 10 10 pF CPD (*) Power Dissipation Capacitance 33 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/6 (per Channel) TEST CIRCUIT ICC (Opr.) INPUT WAVEFORM IS THE SAME AS THAT IN CASE OF SWITCHING CHARACTERISTICS TEST. CPD CALCULATION CPD is to be calculated with the following formula by using the measured value of ICC (opr.) in the test circuit opposite. CPD = ICC (opr) fIN × VCC In determining the typical value of CPD,a relatively high frequency of 1 MHz was ap- plied to fIN, in order to eliminate any error caused by the quiescent supply current. M54/M74HC367/368 5/11 |
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