During the Crysis 3 Mission 7: Gods and Monsters, you can collect three Datapads.
At the very begining of the mission you will come across ruins, go through the tunnel and when you spot the fire, look behind and you will see a stuck box above you, with a datapad inside.
Datapad no. 2
When you escape out in the open follow the path until you reach ammo crates with better weapons. Inside the crate with JAW rocket launchers you will find the second datapad.
Datapad no. 3
The third dadapad is located in the cave near the waterfalls. The datapad can be found in a orange box below a destroyed vehicle.