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Renesas Electronics 841N254BKILF — Clock & Timing ICs

841N254BKILF PLL Clock Synthesizer – Renesas FemtoClock NG

MPN841N254BKILF
End of Life

Renesas FemtoClock® NG series, 841N254BKILF, PLL clock synthesizer, 250 MHz max, 2:4 fanout, HCSL/LVDS outputs, 32-VFQFN (5x5 mm), -40°C to 85°C.

$25.45Ref. price · indicative, final on quote
Renesas Electronics 841N254BKILF datasheet (PDF)
Packaging32-VFQFN Exposed Pad
RoHSROHS3 Compliant
SeriesFemtoClock® NG
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

841N254BKILF specifications
ParameterValue
SeriesFemtoClock® NG
MountingSurface Mount
Supply voltage2.375V ~ 3.465V
Frequency - max250MHz
Operating temperature-40°C ~ 85°C
PLLYes
InputLVCMOS, LVTTL, Crystal
OutputHCSL, LVDS
PackageTray
Main purposeS-RIO 1.3, 2.0
Case32-VFQFN Exposed Pad
Number of circuits1
Ratio - Input:Output2:4
Differential - Input:OutputNo/Yes

Product details

PLL clock synthesis for S-RIO 1.3/2.0 backplanes

The 841N254BKILF is a PLL-based clock synthesizer from the FemtoClock® NG family, designed to generate the reference clocks for Serial RapidIO (S-RIO) 1.3 and 2.0 interfaces. It accepts a single-ended LVCMOS, LVTTL, or crystal input and produces up to four differential HCSL or LVDS outputs at frequencies up to 250 MHz. The 2:4 input-to-output ratio means two reference inputs can be selected to feed four clock outputs, providing fanout for multiple S-RIO ports or link partners from a single PLL.

Frequently asked questions

What is the closest functional alternative to the 841N254BKILF?

The 9ZXL0851EKKLF is a PLL clock synthesizer from the same Renesas family, but it targets Intel QPI and PCI Express (PCIe) rather than S-RIO. It offers 1:8 fanout at 400 MHz with differential inputs and outputs, whereas the 841N254BKILF accepts single-ended inputs and provides 2:4 fanout at 250 MHz. The application focus differs, so verify the S-RIO protocol compatibility before substituting.