The Renesas Electronics differential buffer is a compatible with the intel DB400v2 differential buffer specification. This buffer provides 4 PCI express Gen2 clocks. It is driven by a differential output pair from a CK410B and CK505 or CK509B main clock generator.

Supports zero delay buffer mode and fan-out mode
Bandwidth programming available
50 to 100 MHz operation in PLL mode
50 to 400 MHz operation in bypass mode
Spread spectrum modulation can be tolerant
Supports undriven differential outputs in PD