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