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Renesas Electronics 9DML0451AKILFT — Clock & Timing ICs
Renesas Electronics

9DML0451AKILFT PCIe Clock Buffer, 200 MHz, HCSL, 24-QFN

MPN9DML0451AKILFT
End of Life

Renesas 9DML0451AKILFT, PCI Express (PCIe) clock buffer, PLL No, 2:4 HCSL fanout, 200 MHz max, 3.14V–3.47V supply, -40°C to 85°C, 24-VFQFN Exposed Pad (4x4 mm), Surface Mount, Tape & Reel.

$4.34Ref. price · indicative, final on quote
9DML0451AKILFT datasheet
Packaging24-VFQFN Exposed Pad
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

9DML0451AKILFT Technical Specifications
ParameterValue
Mounting typeSurface Mount
Voltage3.14V ~ 3.47V
Frequency200MHz
Operating temperature-40°C ~ 85°C
PLLNo
InputHCSL
OutputHCSL
PackageTape & Reel (TR); Cut Tape (CT)
Main purposePCI Express (PCIe)
Case24-VFQFN Exposed Pad
Number of circuits1
Ratio - Input:Output2:4
Differential - Input:OutputYes/Yes

Product details

PCIe reference-clock fanout without the PLL jitter

The Renesas 9DML0451AKILFT is a 2:4 differential HCSL clock buffer designed for PCI Express reference-clock trees. It takes one or two HCSL input pairs and fans out to four HCSL output pairs at up to 200 MHz — enough for PCIe Gen1 and Gen2 root complexes and slot clocks. Because it contains no PLL, there is no loop-filter noise, no lock-time delay, and the output-to-output skew is determined only by the internal buffer matching. This makes it a fit for systems that need deterministic latency and low additive jitter, such as server motherboards, storage backplanes, and base-station timing cards.

Supply and temperature — design constraints at a glance

The supply range is 3.14 V to 3.47 V. The operating temperature range is -40°C to 85°C.

Lifecycle and compliance — active, ROHS3, no LTB notice

The 9DML0451AKILFT carries an Active product status and is ROHS3 compliant.

Frequently asked questions

Is 9DML0451AKILFT RoHS compliant?

Yes, the 9DML0451AKILFT is ROHS3 compliant. No additional exemption documentation is needed for standard RoHS3 jurisdictions.

What are the alternatives to 9DML0451AKILFT?

The closest same-function sibling is the 9DBL411BGLFT, also a PLL-less buffer but with a 1:4 fanout, 150 MHz max, and commercial 0°C to 70°C range. If you need a PLL-based fanout with 400 MHz capability, the 9DB803DFLFT is a 1:8 HCSL buffer. Neither is a drop-in replacement — check the fanout ratio, supply tolerance, and temperature grade against your design.

What is 9DML0451AKILFT's listed PLL status?

The 9DML0451AKILFT has no PLL. It is a straight HCSL buffer — no frequency multiplication or jitter attenuation. This means deterministic propagation delay but no cleanup of noisy input clocks.

What is 9DML0451AKILFT's input and output type?

Both input and output are HCSL (High-Speed Current Steering Logic) differential pairs. The part accepts HCSL-level signals and outputs HCSL-level signals with a 2:4 fanout.