The 5P83904PGGK8 from Renesas Electronics America Inc is a clock fanout buffer (distribution) Integrated Circuit with 1:4 outputs at 200 MHz, in a 16-TSSOP package with 0.173" (4.40 mm) width.
The 5P83904CMGK8 from Renesas Electronics America Inc is a clock fanout buffer (distribution) Integrated Circuit with a 1:4 configuration at 200 MHz, in a 16-UFQFN package.