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Renesas Electronics 9DB803DFLF — Discrete Semiconductors

Renesas 9DB803DFLF PCIe Clock Buffer, 400 MHz, 1:8 HCSL

MPN9DB803DFLF
End of Life

Renesas 9DB803DFLF PCI Express (PCIe) clock buffer, integrated PLL, 1:8 HCSL fanout, 400 MHz max, 3.135V–3.465V supply, 48-BSSOP (7.50mm width), 0°C to 70°C, Tube.

$5.65Ref. price · indicative, final on quote
Renesas Electronics 9DB803DFLF datasheet (PDF)
Packaging48-BSSOP (0.295", 7.50mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

9DB803DFLF specifications
ParameterValue
MountingSurface Mount
Supply voltage3.135V ~ 3.465V
Frequency - max400MHz
Operating temperature0°C ~ 70°C
PLLYes
InputHCSL
OutputHCSL
PackageTube
Main purposePCI Express (PCIe)
Case48-BSSOP (0.295\", 7.50mm Width)
Number of circuits1
Ratio - Input:Output1:8
Differential - Input:OutputYes/Yes

Product details

PCIe clock distribution with integrated PLL

The Renesas 9DB803DFLF is a one-input, eight-output differential clock buffer for PCI Express (PCIe) reference clock trees. It integrates a PLL, accepts an HCSL input and delivers HCSL outputs. Maximum output frequency is 400 MHz. The 1:8 fanout ratio distributes a clean reference clock to eight PCIe slots, endpoints, or switch ports.

Supply and temperature — indoor equipment only

If your application needs -40°C to 85°C, the 9ZXL0851EKKLF covers that range with the same 1:8 HCSL fanout and PLL.

Package and mounting — 48-lead SSOP, 7.5 mm wide

Housed in a 48-lead BSSOP (SSOP) package with 0.295 inch (7.50 mm) body width. Surface-mount only. The supplier device package is 48-SSOP. This is a standard footprint for PCIe clock buffers; verify the land pattern against your PCB layout before committing the BOM.

If you are stocking spares for a long-life system, the active status means you can plan replenishment without an EOL scramble.

Frequently asked questions

Is 9DB803DFLF equivalent to 9DB803DFLFT?

The 9DB803DFLFT is the same die and electrical specification as the 9DB803DFLF, but shipped in Tape & Reel (TR) / Cut Tape (CT) / Digi-Reel packaging instead of Tube. Functionally identical; choose the packaging that matches your assembly line.

What is the input and output signal type of 9DB803DFLF?

Both input and output are HCSL (High-Speed Current Steering Logic), the standard differential signaling for PCI Express reference clocks. The part also supports differential input and differential output.

What is the maximum frequency of 9DB803DFLF?

400 MHz.

What are the typical applications of 9DB803DFLF?

PCI Express (PCIe) clock distribution in servers, desktop motherboards, telecom equipment, and test instrumentation. The 1:8 fanout and integrated PLL make it suitable for distributing a jitter-cleaned reference clock to multiple PCIe slots or endpoints.