Provide full specifications of the given IC?
DM74LS94N is obviously some variant of the famous 7400 series logic ICs. 

Therefore I'd google for 


"74LS94 data sheet" 
"74LS94N data sheet"
"7494 data sheet"


and see what turns up.

I'd also identify the makers logo and, if possible, pick that makers data sheet if multiple hits are returned.



n.b. Wikipedia says 7494 is "4-bit shift register, dual asynchronous presets" so I'd hope a 74LS94 would be the low-schottky (LS) version of that.