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MM74HC595N Datasheet(PDF) 4 Page - Fairchild Semiconductor |
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MM74HC595N Datasheet(HTML) 4 Page - Fairchild Semiconductor |
4 / 10 page www.fairchildsemi.com 4 AC Electrical Characteristics VCC = 5V, TA = 25°C, tr = tf = 6 ns Note 5: This setup time ensures the register will see stable data from the shift-register outputs. The clocks may be connected together in which case the stor- age register state will be one clock pulse behind the shift register. AC Electrical Characteristics VCC = 2.0−6.0V, CL = 50 pF, tr = tf = 6 ns (unless otherwise specified) Symbol Parameter Conditions Typ Guaranteed Units Limit fMAX Maximum Operating 50 30 MHz Frequency of SCK tPHL, tPLH Maximum Propagation CL = 45 pF 12 20 ns Delay, SCK to Q’H tPHL, tPLH Maximum Propagation CL = 45 pF 18 30 ns Delay, RCK to QA thru QH tPZH, tPZL Maximum Output Enable RL = 1 kΩ Time from G to QA thru QH CL = 45 pF 17 28 ns tPHZ, tPLZ Maximum Output Disable RL = kΩ 15 25 ns Time from G to QA thru QH CL = 5 pF tS Minimum Setup Time 20 ns from SER to SCK tS Minimum Setup Time 20 ns from SCLR to SCK tS Minimum Setup Time 40 ns from SCK to RCK (Note 5) tH Minimum Hold Time 0ns from SER to SCK tW Minimum Pulse Width 16 ns of SCK or RCK Symbol Parameter Conditions VCC TA = 25°CTA = −40 to 85°CTA = −55 to 125°C Units Typ Guaranteed Limits fMAX Maximum Operating CL = 50 pF 2.0V 10 6 4.8 4.0 MHz Frequency 4.5V 45 30 24 20 6.0V 50 35 28 24 tPHL, tPLH Maximum Propagation CL = 50 pF 2.0V 58 210 265 315 ns Delay from SCK to Q’H CL = 150 pF 2.0V 83 294 367 441 CL = 50 pF 4.5V 14 42 53 63 ns CL = 150 pF 4.5V 17 58 74 88 CL = 50 pF 6.0V 10 36 45 54 ns CL = 150 pF 6.0V 14 50 63 76 tPHL, tPLH Maximum Propagation CL = 50 pF 2.0V 70 175 220 265 ns Delay from RCK to QA thru QH CL = 150 pF 2.0V 105 245 306 368 CL = 50 pF 4.5V 21 35 44 53 ns CL = 150 pF 4.5V 28 49 61 74 CL = 50 pF 6.0V 18 30 37 45 ns CL = 150 pF 6.0V 26 42 53 63 tPHL, tPLH Maximum Propagation 2.0V 175 221 261 ns Delay from SCLR to Q’H 4.5V 35 44 52 6.0V 30 37 44 tPZH, tPZL Maximum Output Enable RL = 1 kΩ from G to QA thru QH CL = 50 pF 2.0V 75 175 220 265 ns CL = 150 pF 2.0V 100 245 306 368 CL = 50 pF 4.5V 15 35 44 53 ns CL = 150 pF 4.5V 20 49 61 74 CL = 50 pF 6.0V 13 30 37 45 ns CL = 150 pF 6.0V 17 42 53 63 |
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