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M74HC4518B1R Fiches technique(PDF) 7 Page - STMicroelectronics |
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M74HC4518B1R Fiches technique(HTML) 7 Page - STMicroelectronics |
7 / 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 -55 to 125 oC 54HC Min. Typ. Max. Min. Max. Min. Max. tTLH tTHL Output Transition Time 2.0 30 75 95 110 ns 4.5 8 151922 6.0 7 131619 tPLH tPHL Propagation Delay Time (CK, CE - Qn) 2.0 72 160 200 240 ns 4.5 22 32 40 48 6.0 18 27 34 41 tPHL Propagation Delay Time (CLR - Qn) 2.0 65 150 190 225 ns 4.5 20 30 38 45 6.0 16 26 33 38 fMAX Maximum Clock Frequency 2.0 6 23 4.8 4 MHz 4.5 30 51 24 20 6.0 35 60 28 24 tW(H) tW(L) Minimum Pulse Width (CK, CE) 2.0 25 75 95 ns 4.5 6 15 19 6.0 5 13 16 tW(L) Minimum Pulse Width (CLR) 2.0 20 75 95 110 ns 4.5 5 151922 6.0 4 131619 tREM Minimum Removal Time (CLR) 2.0 21 50 60 75 ns 4.5 3 101215 6.0 3 9 11 13 CIN Input Capacitance 5 10 10 10 pF CPD (*) Power Dissipation Capacitance for HC4518 for HC4520 38 32 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/2 (per COUNTER) M54/M74HC4518/4520 7/13 |
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