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74LS164 데이터시트(PDF) 3 Page - System Logic Semiconductor |
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74LS164 데이터시트(HTML) 3 Page - System Logic Semiconductor |
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3 / 4 page ![]() SL74LS164 System Logic Semiconductor SLS Note 2: ICC is measured with outputs open, serial inputs grouned, the clock input at 2.4 V, and a momentary ground, then 4.5 V applied. AC ELECTRICAL CHARACTERISTICS (T A=25 °C, V CC = 5.0 V, CL = 15 pF, RL = 2 k Ω, t r =15 ns, tf = 6.0 ns) Symbol Parameter Min Max Unit tPLH Propagation Delay Time, Clock to Q 27 ns tPHL Propagation Delay Time, Clock to Q 32 ns tPHL Propagation Delay Time, Reset to Q 36 ns tsu Setup Time, A1 or A2 to Clock 15 ns th Hold Time, Clock to A1 or A2 5 ns tw Pulse Width, Clock 20 ns tw Pulse Width, Reset 20 ns Figure 1. Switching Waveforms Figure 2. Switching Waveforms NOTES A. CL includes probe and jig capacitance. B. All diodes are 1N916 or 1N3064. Figure 3. Switching Waveform Figure 4. Test Circuit |
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