
Renesas has been first to market in PCI Express clocking and timing since its inception:
With expertise with leading CPU platforms, Renesas is in the optimal position to support all your design needs for processor clocking from personal PCs to data centers and cloud servers. Find your ideal PCIe timing solutions.
Renesas recognizes how challenging it is to balance the system needs of tightening jitter limits, restrictive BOM costs, and shrinking board space. Our clocks support diverse requirements including PCI Express, SATA, USB, SAS, DMI, QPI, Hypertransport, Ethernet, etc., and multiple socket CPU architectures.
PCI Express is one of the most widely used high-performance peripheral interfaces in the world. From its origins in graphics, fields as diverse as high-performance computing, servers, storage, networking, and instrumentation have adopted PCI Express. This broad application space requires multiple PCI Express clock solutions optimized for the performance/BOM cost/board-space tradeoffs of each application. Renesas' strong partnerships with leading computing, networking, and consumer vendors and our participation in the appropriate standards bodies enable us to stay at the forefront of the market with the ideal PCI Express clock and timing solutions (PCIe clocks) for every application.
CC ArchitectureCommon Clock |
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SRnS ArchitectureSeparate Reference No Spread |
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SRIS ArchitectureSeparate Reference Independent Spread |
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Clock Gen | Clock Gen | Clock Gen | Clock Gen | Clock Gen | ||||||||
Clock south |
Clock south |
Clock south |
Clock south |
Clock south |
Clock south |
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Buffer (optional) |
Buffer (optional) |
Buffer (optional) |
Buffer (optional) |
Buffer (optional) |
Buffer (optional) |
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south | south | south | south | south | south | |||||||
CPU/SoC | swap_horiz PCIe Data |
PCIe Device | CPU/SoC | swap_horiz PCIe Data |
PCIe Device | CPU/SoC | swap_horiz PCIe Data |
PCIe Device | ||||
Function |
Architecture |
App Jitter Compliance |
Diff. Outputs |
Diff. Output Signaling |
Output Impedance |
Diff. Inputs |
Power Consumption Typ (mW) |
Supply Voltage (V) |
Advanced Features |
Lead Count (#) |
Pkg. Type |
Pkg. Dimensions (mm) |
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Part Number | |||||||||||||
CK440Q PCIe Gen6 Server Clock Generator | Generator | Common, SRIS, SRNS | PCIe Gen1, PCIe Gen2, PCIe Gen3, PCIe Gen4, PCIe Gen5, PCIe Gen6 | 20 | LP-HCSL | 85 | 875 | 3.3 | 25MHz output(s), 100MHz output(s), PFT, Spread Spectrum | 100 | VFQFPN | 8.0 x 8.0 x 0.55 | |
PCIe Gen6 2:8 Clock Multiplexer | Multiplexer | Common, SRIS, SRNS | PCIe Gen1, PCIe Gen2, PCIe Gen3, PCIe Gen4, PCIe Gen5, PCIe Gen6 | 8 | LP-HCSL | 85, 100 | 2 | 250 | 3.3 | Automatic Clock Parking, Flexible Power Sequencing and more... |
48 | VFQFPN | 6.0 x 6.0 x 0.9 |
PCIe Gen6 2:4 Clock Multiplexer | Multiplexer | Common, SRIS, SRNS | PCIe Gen1, PCIe Gen2, PCIe Gen3, PCIe Gen4, PCIe Gen5, PCIe Gen6 | 4 | LP-HCSL | 85, 100 | 2 | 92 | 3.3 | Automatic Clock Parking, Flexible Power Sequencing and more... |
28 | VFQFPN | 4.0 x 4.0 x 0.9 |
PCIe Gen6 2:2 Clock Multiplexer | Multiplexer | Common, SRIS, SRNS | PCIe Gen1, PCIe Gen2, PCIe Gen3, PCIe Gen4, PCIe Gen5, PCIe Gen6 | 2 | LP-HCSL | 85, 100 | 2 | 72 | 3.3 | Automatic Clock Parking, Flexible Power Sequencing and more... |
20 | VFQFPN | 3.0 x 3.0 x 1.0 |
PCIe Gen6 24-Output Clock Buffer | Fanout Buffer | Common, SRIS, SRNS | PCIe Gen1, PCIe Gen2, PCIe Gen3, PCIe Gen4, PCIe Gen5, PCIe Gen6 | 24 | LP-HCSL | 85 | 1 | 808 | 3.3 | Automatic Clock Parking, Flexible Power Sequencing and more... |
100 | VFQFPN | 8.0 x 8.0 x 0.55 |
PCIe Gen6 20-Output Clock Buffer | Fanout Buffer | Common, SRIS, SRNS | PCIe Gen1, PCIe Gen2, PCIe Gen3, PCIe Gen4, PCIe Gen5, PCIe Gen6 | 20 | LP-HCSL | 85 | 1 | 716 | 3.3 | Automatic Clock Parking, Flexible Power Sequencing and more... |
72, 80 | VFQFPN | 6.0 x 6.0 x 0.85, 10.0 x 10.0 x 1.0 |
PCIe Gen6 16-Output Clock Buffer | Fanout Buffer | Common, SRIS, SRNS | PCIe Gen1, PCIe Gen2, PCIe Gen3, PCIe Gen4, PCIe Gen5, PCIe Gen6 | 16 | LP-HCSL | 85, 100 | 1 | 508, 498 | 3.3 | Automatic Clock Parking, Flexible Power Sequencing and more... |
64 | VFQFPN | 9.0 x 9.0 x 0.9 |
PCIe Gen6 13-Output Clock Buffer | Fanout Buffer | Common, SRIS, SRNS | PCIe Gen1, PCIe Gen2, PCIe Gen3, PCIe Gen4, PCIe Gen5, PCIe Gen6 | 13 | LP-HCSL | 85, 100 | 1 | 363, 320 | 3.3 | Automatic Clock Parking, Flexible Power Sequencing and more... |
56 | VFQFPN | 7.0 x 7.0 x 1.0 |
PCIe Gen6 8-Output Clock Buffer | Fanout Buffer | Common, SRIS, SRNS | PCIe Gen1, PCIe Gen2, PCIe Gen3, PCIe Gen4, PCIe Gen5, PCIe Gen6 | 8 | LP-HCSL | 85, 100 | 1 | 237, 231 | 3.3 | Automatic Clock Parking, Flexible Power Sequencing and more... |
40 | VFQFPN | 5.0 x 5.0 x 0.9 |
PCIe Gen6 4-Output Clock Buffer | Fanout Buffer | Common, SRIS, SRNS | PCIe Gen1, PCIe Gen2, PCIe Gen3, PCIe Gen4, PCIe Gen5, PCIe Gen6 | 4 | LP-HCSL | 85, 100 | 1 | 128, 125 | 3.3 | Automatic Clock Parking, Flexible Power Sequencing and more... |
28 | VFQFPN | 4.0 x 4.0 x 0.9 |
PCIe Gen6 2-Output Clock Buffer | Fanout Buffer | Common, SRIS, SRNS | PCIe Gen1, PCIe Gen2, PCIe Gen3, PCIe Gen4, PCIe Gen5, PCIe Gen6 | 2 | LP-HCSL | 85, 100 | 1 | 72 | 3.3 | Automatic Clock Parking, Flexible Startup Sequencing and more... |
20 | VFQFPN | 3.0 x 3.0 x 1.0 |
PCIe Gen6 2:16 Clock Multiplexer | Multiplexer | Common, SRIS, SRNS | PCIe Gen1, PCIe Gen2, PCIe Gen3, PCIe Gen4, PCIe Gen5, PCIe Gen6 | 16 | LP-HCSL | 85, 100 | 2 | 534 | 3.3 | Automatic Clock Parking, Flexible Power Sequencing and more... |
80 | VFQFPN | 6.0 x 6.0 x 0.85 |
VersaClock® 3S Programmable Clock Generator | Generator | Common | PCIe Gen1, PCIe Gen2, PCIe Gen3 | 2 | LP-HCSL, LVCMOS, LVDS, LVPECL | 100 | 50 | 1.8, 2.5, 3.3 | Programmable Clock, Reference Output, Spread Spectrum | 20 | VFQFPN | 3.0 x 3.0 x 1.0 | |
VersaClock® 3S Programmable Clock Generator | Generator | Common | PCIe Gen1, PCIe Gen2, PCIe Gen3 | 2 | LP-HCSL, LVCMOS, LVDS, LVPECL | 100 | 50 | 1.8, 2.5, 3.3 | Programmable Clock, Reference Output, Spread Spectrum | 24 | VFQFPN | 4.0 x 4.0 x 0.9 | |
VersaClock® 6E Programmable Clock Generator | Generator | Common, SRIS, SRNS | PCIe Gen1, PCIe Gen2, PCIe Gen3, PCIe Gen4, PCIe Gen5 | 4 | HCSL, LVCMOS, LVDS, LVPECL | 100 | 100 | 1.8, 2.5, 3.3 | Programmable Clock, Reference Output, Spread Spectrum | 24 | VFQFPN | 4.0 x 4.0 x 0.9 | |
4:4 Clock MUX for PCI Express Gen1–6 | Multiplexer | Common, SRIS, SRNS | PCIe Gen1, PCIe Gen2, PCIe Gen3, PCIe Gen4, PCIe Gen5, PCIe Gen6 | 4 | LP-HCSL | 85, 100 | 4 | 124 | 3.3, 2.5, 1.8 | Selectable Output Amplitude, Selectable Output Impedance and more... |
32 | VFQFPN | 5.0 x 5.0 x 0.9 |
Programmable PhiClock™ Generator | Generator | Common, SRIS, SRNS | PCIe Gen1, PCIe Gen2, PCIe Gen3, PCIe Gen4, PCIe Gen5, PCIe Gen6 | 4 | LP-HCSL, LVDS | 85, 100 | 125 | 3.3, 1.8 | Programmable Clock | 24 | LGA, VFQFPN | 4.0 x 4.0 x 0.8, 4.0 x 4.0 x 1.4 | |
Programmable PhiClock™ Generator | Generator | Common, SRNS | PCIe Gen1, PCIe Gen2, PCIe Gen3, PCIe Gen4, PCIe Gen5, PCIe Gen6 | 2 | LP-HCSL | 85, 100 | 100 | 3.3, 1.8 | Programmable Clock | 16 | LGA | 3.0 x 3.0 x 1.1 | |
20-Output DB2000Q PCIe Clock Buffer | Fanout Buffer | Common, SRIS, SRNS | 25G EDR, DB2000Q, IF-UPI, PCIe Gen1, PCIe Gen2, PCIe Gen3 and more... |
20 | LP-HCSL | 85 | 1 | 594 | 3.3 | Multiple SMBus addresses | 72 | VFQFPN | 10.0 x 10.0 x 1.0 |
20-Output Enhanced DB2000Q PCIe Clock Buffer | Fanout Buffer | Common, SRIS, SRNS | 25G EDR, DB2000Q, IF-UPI, PCIe Gen1, PCIe Gen2, PCIe Gen3 and more... |
20 | LP-HCSL | 85 | 1 | 739 | 3.3 | Multiple SMBus addresses | 72 | VFQFPN | 10.0 x 10.0 x 1.0 |
20-Output DB2000QL PCIe Clock Buffer | Fanout Buffer | Common, SRIS, SRNS | 25G EDR, DB2000Q, IF-UPI, PCIe Gen1, PCIe Gen2, PCIe Gen3 and more... |
20 | LP-HCSL | 85 | 1 | 488 | 3.3 | Multiple SMBus addresses, Side Band interface | 80 | VFQFPN | 6.0 x 6.0 x 0.85 |
20-Output Enhanced DB2000QL PCIe Clock Buffer | Fanout Buffer | Common, SRIS, SRNS | 25G EDR, DB2000Q, IF-UPI, PCIe Gen1, PCIe Gen2, PCIe Gen3 and more... |
20 | LP-HCSL | 85 | 1 | 720 | 3.3 | Multiple SMBus addresses, Side Band interface | 80 | VFQFPN | 6.0 x 6.0 x 0.85 |
CK440Q Lite PCIe Gen6 Server Clock Generator | Generator | Common, SRIS, SRNS | PCIe Gen1, PCIe Gen2, PCIe Gen3, PCIe Gen4, PCIe Gen5, PCIe Gen6 | 6 | LP-HCSL | 85 | 1 | 400 | 3.3 | 25MHz output(s), 100MHz output(s), PFT, Spread Spectrum | 40 | VFQFPN | 5.0 x 5.0 x 0.9 |
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Type | Title | Date |
Overview | PDF 872 KB | |
Overview | PDF 2.40 MB | |
Overview | PDF 217 KB | |
White Paper | PDF 1.35 MB | |
4 items
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The RC family are PCIe Gen6 clock buffer and multiplexer solutions provide industry's smallest and most compact footprint.
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Future-proof Your PCIe® Designs | Blog Post | Apr 14, 2022 |
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Solving Common Issues with Respect to PCIe Timing Design on the Modern Server System | Blog Post | Apr 14, 2022 |
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Renesas Introduces Industry’s First PCIe Gen6 Clock Buffers and Multiplexers | News | Apr 14, 2022 |
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Comparing and Contrasting PCIe and Ethernet Clock Jitter Specifications | Blog Post | May 22, 2018 |