Features
- 12 - 0.7 V current mode differential HCSL output pairs
- 3 Selectable SMBus Addresses/Multiple devices can share the same SMBus Segment
- 12 OE# pins/Hardware control of each output
- PLL or bypass mode/PLL can dejitter incoming clock
- Selectable PLL bandwidth/minimizes jitter peaking in downstream PLL's
- Spread Spectrum Compatible/tracks spreading input clock for low EMI
- SMBus Interface/unused outputs can be disabled
- Supports undriven differential outputs in Power Down mode for power management
- Output cycle-cycle jitter < 50 ps
- Output-to-output skew < 50 ps
- PCIe Gen3 phase jitter < 1.0 ps RMS
- Pin compatible with DB1200 Yellow Cover Device
Description
The 9DB1233 zero-delay buffer supports PCIe Gen3 requirements, while being backwards compatible to PCIe Gen2 and Gen1. The 9DB1233 is driven by a differential SRC output pair from an IDT 932S421 or 932SQ420 or equivalent main clock generator. It attenuates jitter on the input clock and has a selectable PLL bandwidth to maximize performance in systems with or without Spread-Spectrum clocking.