поискавой системы для электроныых деталей |
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SN74LS163AM датащи(PDF) 5 Page - ON Semiconductor |
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SN74LS163AM датащи(HTML) 5 Page - ON Semiconductor |
5 / 8 page SN74LS161A, SN74LS163A http://onsemi.com 5 AC CHARACTERISTICS (TA = 25°C) Symbol Parameter Limits Unit Test Conditions Min Typ Max fMAX Maximum Clock Frequency 25 32 MHz VCC = 5.0 V CL = 15 pF tPLH tPHL Propagation Delay Clock to TC 20 18 35 35 ns tPLH tPHL Propagation Delay Clock to Q 13 18 24 27 ns tPLH tPHL Propagation Delay CET to TC 9.0 9.0 14 14 ns tPHL MR or SR to Q 20 28 ns AC SETUP REQUIREMENTS (TA = 25°C) Symbol Parameter Limits Unit Test Conditions Min Typ Max tWCP Clock Pulse Width Low 25 ns VCC = 5.0 V tW MR or SR Pulse Width 20 ns ts Setup Time, other* 20 ns ts Setup Time PE or SR 25 ns th Hold Time, data 3 ns th Hold Time, other 0 ns trec Recovery Time MR to CP 15 ns *CEP, CET, or DATA DEFINITION OF TERMS SETUP TIME (ts) — is defined as the minimum time required for the correct logic level to be present at the logic input prior to the clock transition from LOW to HIGH in order to be recognized and transferred to the outputs. HOLD TIME (th) — is defined as the minimum time following the clock transition from LOW to HIGH that the logic level must be maintained at the input in order to ensure continued recognition. A negative HOLD TIME indicates that the correct logic level may be released prior to the clock transition from LOW to HIGH and still be recognized. RECOVERY TIME (trec) — is defined as the minimum time required between the end of the reset pulse and the clock transition from LOW to HIGH in order to recognize and transfer HIGH Data to the Q outputs. AC WAVEFORMS Figure 1. Clock to Output Delays, Count Frequency, and Clock Pulse Width Figure 2. Master Reset to Output Delay, Master Reset Pulse Width, and Master Reset Recovery Time 1.3 V 1.3 V 1.3 V 1.3 V 1.3 V 1.3 V 1.3 V CP Q tW(H) tW(L) trec tPHL tPHL tPLH Other conditions: PE = MR (SR) = H CEP = CET = H Other conditions: PE = L P0 = P1 = P2 = P3 = H tW Q0 V Q1 V Q2 V Q3 MR CP |
Аналогичный номер детали - SN74LS163AM |
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Аналогичное описание - SN74LS163AM |
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