I'm looking to make my first real PCB with eagle and want to use the a"STMicroelectronics TSU104IPTTSU104IPT op amp chip The spec sheet says the package is a
"14-TSSOP", however I couldn't find anything in my eagle library with the same footprint. I was going to make a schematic, then turn it into a PCB. Do I have to make my own package size for this to use or is there something existing I can download? Is this a common package? It doesn't have to be for this op -amp...just something that with the same footprint and number of pins. Thanks advance for your advice-just getting into it and there's a lot to learn so I apologize if there is something simple I'm overlooking.
Spec sheet for the TSU104IPTTSU104IPT
https://www.digikey.com/product-detail/en/stmicroelectronics/TSU104IPT/497-14090-1-ND/4499538