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Renesas Electronics 9DB403DFLF — Discrete Semiconductors
Renesas Electronics

9DB403DFLF PCIe Buffer, 400 MHz, 1:4 Fanout, 28-SSOP

MPN9DB403DFLF
End of Life

Renesas 9DB403DFLF PCI Express (PCIe) clock buffer, PLL Yes, Input HCSL, Output HCSL LVDS, 1:4 fanout, 400 MHz max, 3.135V-3.465V supply, 0°C to 70°C, 28-SSOP, Surface Mount, Tube.

$4.75Ref. price · indicative, final on quote
9DB403DFLF datasheet
Packaging28-SSOP (0.209", 5.30mm Width)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
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Specifications

9DB403DFLF Technical Specifications
ParameterValue
Mounting typeSurface Mount
Voltage3.135V ~ 3.465V
Frequency400MHz
Operating temperature0°C ~ 70°C
PLLYes
InputHCSL
OutputHCSL, LVDS
PackageTube
Main purposePCI Express (PCIe)
Case28-SSOP (0.209\", 5.30mm Width)
Number of circuits1
Ratio - Input:Output1:4
Differential - Input:OutputYes/Yes

Product details

Fanout and output flexibility

The 1:4 ratio lets a single reference clock source drive up to four PCIe slots, root complexes, or switch endpoints without an external fanout tree. Outputs are individually selectable between HCSL and LVDS, which simplifies BOM consolidation when mixing PCIe and non-PCIe differential receivers on the same board. The differential input and all outputs are fully differential (Yes/Yes), so no single-ended termination is needed on the clock lanes.

Lifecycle and compliance

It is ROHS3 compliant, so it meets the EU RoHS exemption-free requirements for lead-free assembly.

Frequently asked questions

Is 9DB403DFLF compatible with PCIe Gen3?

Yes. The 400 MHz maximum frequency covers the 100 MHz PCIe reference clock with margin for Gen3 (8 GT/s) link rates, and the internal PLL cleans up jitter to meet the PCIe Gen3 jitter specifications.

What is the equivalent or replacement for 9DB403DFLF?

The closest functional equivalent is the 9DB803DFLFT, which offers a 1:8 fanout ratio in the same 28-SSOP package and identical 400 MHz HCSL/LVDS output capability. For a 1:4 ratio with LP-HCSL outputs, the 9DBL411BGLFT is an alternative but operates at 150 MHz max and lacks a PLL.

Is 9DB403DFLF RoHS compliant?

Yes, it is ROHS3 Compliant, meeting the EU RoHS exemption-free requirements for lead-free soldering.