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SN74LS299DW Datasheet(PDF) 4 Page - Motorola, Inc |
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SN74LS299DW Datasheet(HTML) 4 Page - Motorola, Inc |
4 / 7 page 5-482 FAST AND LS TTL DATA SN54/74LS299 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 35 MHz CL = 15 pF 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 L = 15 pF tPHL tPLH Propagation Delay, Clock to I/O0 – I/O7 26 17 39 25 ns CL = 45 pF, RL = 667 Ω 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) Symbol Parameter Limits Unit Test Conditions Symbol Parameter Min Typ Max Unit Test Conditions tW Clock Pulse Width HIGH 25 ns VCC = 5.0 V tW Clock Pulse Width LOW 13 ns VCC = 5.0 V tW Clear Pulse Width LOW 20 ns VCC = 5.0 V ts Data Setup Time 20 ns VCC = 5.0 V 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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