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M74HC597 Datasheet(PDF) 7 Page - STMicroelectronics |
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M74HC597 Datasheet(HTML) 7 Page - STMicroelectronics |
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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. fMAX Maximum Clock Frequency 2.0 6.0 12 4.8 4.0 ns 4.5 30 48 24 20 6.0 35 50 28 24 tW(H) tW(L) Propagation Delay Time (SCK, RCK) 2.0 20 75 95 110 ns 4.5 7 151922 6.0 4 131619 tW(L) Propagation Delay Time (SCLR, SLOAD) 2.0 25 75 95 110 ns 4.5 7 151922 6.0 5 131619 tS Minimum Set-up Time (RCK - SLOAD) 2.0 48 100 125 150 ns 4.5 12 20 25 30 6.0 10 17 21 26 tS Minimum Set-up Time (SI, SCK) 2.0 20 75 95 110 ns 4.5 5 151922 6.0 4 131619 tS Minimum Set-up Time (PI - RCK) 2.0 20 75 95 110 ns 4.5 5 151922 6.0 4 131619 tf Minimum Hold Time 2.0 0 0 0 ns 4.5 0 0 0 6.0 0 0 0 tREM Propagation Delay Time (SCLR, SLOAD) 2.0 12 75 95 115 ns 4.5 4 151923 6.0 3 131620 CIN Input Capacitance 5 10 10 10 pF CPD (*) Power Dissipation Capacitance 60 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 SWITCHING CHARACTERISTICS TEST WAVEFORM M54/M74HC597 7/13 |
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