SN74LS20 Description
Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (TA = 25°C) Symbol tPLH tPHL Parameter Turn-Off Delay, Input to Output Turn-On Delay, Input to Output Limits Min Typ Max Unit 9.0 15 ns 10 15 ns Test Conditions VCC = 5.0 V CL = 15 pF FAST AND LS TTL DATA 5-30.