Description
The 9DB1904 is electrically compatible to the Intel DB1900GS
Differential Buffer Specification. This buffer provides 19 output clocks
for PCI-Express Gen2 or Intel QPI 6.4GT/s applications. A differential
clock from a CK410B+ main clock generator, such as the
ICS932S421 drives the 9DB1904. The 9DB1904 can provide
outputs up to 400MHz in Bypass Mode.

Features/Benefits
• Power up default is all outputs in 1:1 mode/No SMBus
programming
• Spread spectrum compatible/EMI reductions
• Supports output frequencies up to 400 MHz in bypass
mode/flexible fanout buffer
• 8 Selectable SMBus addresses/no SMBus
segmentation required
• SMBus address determines PLL or Bypass mode/pin
savings
• Dedicated VDDA and CKPWRGD_PD# pins/easy board
design