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SN74LS299 Datasheet(PDF) 5 Page - ON Semiconductor |
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SN74LS299 Datasheet(HTML) 5 Page - ON Semiconductor |
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5 / 8 page ![]() SN74LS299 http://onsemi.com 5 AC CHARACTERISTICS (TA = 25°C, VCC = 5.0 V) Limits Symbol Parameter Min Typ Max Unit Test Conditions fMAX Maximum Clock Frequency 25 35 MHz tPHL tPLH Propagation Delay, Clock to Q0 or Q7 26 22 39 33 ns CL = 15 pF tPHL Propagation Delay, Clear to Q0 or Q7 27 40 ns tPHL tPLH Propagation Delay, Clock to I/O0 – I/O7 26 17 39 25 ns tPHL Propagation Delay, Clear to I/O0 – I/O7 26 40 ns CL = 45 pF, RL = 667 Ω tPZH tPZL Output Enable Time 13 19 21 30 ns tPHZ tPLZ Output Disable Time 10 10 15 15 ns CL = 5.0 pF AC SETUP REQUIREMENTS (TA = 25°C, VCC = 5.0 V) Limits Symbol Parameter Min Typ Max Unit Test Conditions tW Clock Pulse Width HIGH 25 ns tW Clock Pulse Width LOW 13 ns tW Clear Pulse Width LOW 20 ns ts Data Setup Time 20 ns VCC =5 0V ts Select Setup Time 35 ns VCC = 5.0 V th Data Hold Time 0 ns th Select Hold Time 10 ns trec Recovery Time 20 ns |
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