9DB423B

DATASHEET Four Output Differential Buffer for PCIe Gen 1, Gen 2 and QPI Recommended Application: DB400Q compatible part with PCIe Gen1, Gen 2 and QPI support 9 DB423B Features/Benefits • • Spread spectrum modulation tolerant, 0 to -0.5% down spread and +/- 0.25% center spread. Supports undriven differential outputs in Power Down and DIF_STOP# modes for power management. General Description: The ICS9DB423 is compatible with the Intel DB400Q Differential Buffer Specification. This buffer provides 4 PCI-Express SRC or 4 QPI clocks. The ICS9DB423 is driven by a differential output pair from a CK410B+ or CK509B main clock generator. Output Features • • • • • 4 - 0.7V current-mode differential output pairs Supports zero delay buffer mode and fanout mode Bandwidth programming available 50-133 MHz operation in PLL mode 33-400 MHz operation in Bypass mode Key Specifications • • • • • • Output cycle-cycle jitter < 50ps. Output to Output skew