Look at the Datasheets and see if any of the conditions or Voltages are different than your paremiters.
Compare the data and see.
CD74HCT193E.pdf
DM74LS193_DM54LS193.pdf
Excellent site on the Invention of the Transistor.
http://www.bellsystemmemorial.com/belllabs_transistor.html
Who really invented it?
http://www.bellsystemmemorial.com/belllabs_transistor1.html
The Original Transistor Patent
http://www.bellsystemmemorial.com/pdf/02569347.pdf