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74LS670 Datasheet(PDF) 5 Page - ON Semiconductor |
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74LS670 Datasheet(HTML) 5 Page - ON Semiconductor |
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5 / 8 page ![]() SN74LS670 http://onsemi.com 5 AC CHARACTERISTICS (TA = 25°C) Limits Symbol Parameter Min Typ Max Unit Test Conditions tPLH tPHL Propagation Delay, RA or RB to Output 23 25 40 45 ns tPLH tPHL Propagation Delay, EW to Output 26 28 45 50 ns VCC = 5.0 V, tPLH tPHL Propagation Delay, Data to Output 25 23 45 40 ns CC CL = 45 pF tPZH tPZL Output Enable Time 15 22 35 40 ns tPLZ tPHZ Output Disable Time 16 30 35 50 ns CL = 5.0 pF AC SETUP REQUIREMENTS (TA = 25°C) Limits Symbol Parameter Min Typ Max Unit Test Conditions tW Pulse Width 25 ns ts Setup Time, (D) 10 ns ts Setup Time, (W) 15 ns VCC =5 0V th Hold Time, (D) 15 ns VCC = 5.0 V th Hold Time, (W) 5.0 ns trec Recovery Time 25 ns AC WAVEFORMS Figure 1. Figure 2. Figure 3. 1.3 V 1.3 V 1.3 V 1.3 V 1.3 V 1.3 V 1.3 V 1.3 V 1.3 V 1.3 V 1.3 V 1.3 V 1.3 V 1.3 V RA, RB Q Q D, EW WA, WB D EW ts th th ts tW tPHL tPLH tPHL tPLH |
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