DATASHEET
ICS9DB423
4-OUTPUT DIFFERENTIAL BUFFER FOR PCIE GEN1, GEN2, AND QPI
General Description
Features/Benefits
The ICS9DB423B is compatible with the Intel DB400Q
Differential Buffer Specification. This buffer provides 4
PCI-Express SRC or 4 QPI clocks. The ICS9DB423B is
driven by a differential output pair from a CK410B+ or
CK509B main clock generator.
• Spread spectrum modulation tolerant, 0 to -0.5% down
• Supports undriven differential outputs in Power Down
and DIF_STOP# for modes for power management.
Output Features
Recommended Application
DB400Q compatible part with PCIe Gen1, Gen 2 and QPI
support
Key Specifications
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spread and +/- 0.25% center spread
Output cycle-cycle jitter < 50ps
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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
Output to Output skew
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