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SN74LS168D データシート(PDF) 5 Page - Motorola, Inc |
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SN74LS168D データシート(HTML) 5 Page - Motorola, Inc |
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5 / 8 page ![]() 5-306 FAST AND LS TTL DATA SN54/74LS168 • SN54/74LS169 AC CHARACTERISTICS (TA = 25°C, VCC = 5.0 V) Symbol Parameter Limits Unit Test Conditions Symbol Parameter Min Typ Max Unit Test Conditions fMAX Maximum Clock Frequency 25 32 MHz VCC = 5.0 V CL = 15 pF tPLH tPHL Propagation Delay, Clock to TC 23 23 35 35 ns VCC = 5.0 V CL = 15 pF tPLH tPHL Propagation Delay, Clock to any Q 13 15 20 23 ns VCC = 5.0 V CL = 15 pF tPLH tPHL Propagation Delay, CET to TC 15 15 20 20 ns CL = 15 pF tPLH tPHL Propagation Delay, U / D to TC 17 19 25 29 ns AC SETUP REQUIREMENTS (TA = 25°C) Symbol Parameter Limits Unit Test Conditions Symbol Parameter Min Typ Max Unit Test Conditions tW Clock Pulse Width 25 ns VCC = 5.0 V ts Setup Time, Data or Enable 20 ns VCC = 5.0 V ts Setup Time PE 25 ns VCC = 5.0 V ts Setup Time U / D 30 ns CC = 5.0 V th Hold Time Any Input 0 ns |
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