The Renesas Electronics fan-out buffers are 3.3V members of IDT's full featured PCIe clock family. This devices support PCIe Gen1–4 Common Clocked (CC) and PCIe
Separate Reference Independent Spread (SRIS) systems. They offer a choice of integrated output terminations providing direct connection to 85Ω or 100Ω transmission lines. It can be factory programmed with a user-defined power up default SMBus configuration. Various applications where this device is used are PCIe Gen1–4 clock distribution for Riser Cards, Storage, Networking, JBOD, Communications and Access Points.

Direct connection to 100ohm or 85ohm transmission lines saves 36 resistors compared to standard PCIe devices
165mW of typical power consumption at 3.3V eliminates thermal concerns
VDDIO allows 50% power savings at optional 1.05V
Customer defined SMBus power up default can be programmed into P1 device
HCSL differential input can be driven by common clock sources
Spread spectrum tolerant allows reduction of EMI
Device contains default configuration
Three selectable SMBus addresses so multiple devices can easily share an SMBus segment
Space saving 48-pin 6 x 6mm VFQFPN