Datasheet help?

Does anyone know where i can get the datasheet for the following IC's:


ha118019nt
hd49756nt
cd8081n

I CAN NOT find them and it's starting to really tick me off.

There are some sites that I use:

http://www.alldatasheet.com

and

http://www.datasheet4u.com/

There are others too. Perhaps they can help.
~Bob~

 
Try ditching the last letters.

Are you sure about the CD8081 ?

Steve
Good suggestion. Or, sometimes searching only for the digits will do it for you; the letters sometimes signify things like manufacturer and packaging rather than function.

On the other hand there are also plenty of custom, or custom-labelled, ICs for which datasheets are not available.

If these came from dissecting something, try to get the circuit diagram for that product. Sometimes it's available for repair, and if so you can probably figure out at least the general properties of the chip from how it was being used there.