It handles 400 Mbps per channel over a differential pair, making it a standard choice for point-to-point or multidrop backplane links, camera serial interfaces, and clock distribution in industrial or telecom gear. The 3V to 3.6V supply rail means it runs clean off a 3.3V supply; no 5V tolerance here, so check your rail before you drop it in.
The 400 Mbps data rate is specified for the part. Four receivers in one package. The 0/4 driver/receiver count means this is purely a receiver.
It's ROHS3 compliant, so no conflict with current environmental directives. For new designs, this part is a safe bet; you're not chasing a sunset part.