Features
- Integrated terminations
- 85Ω transmission lines require 0 termination resistors
- 100Ω transmission lines require only 2 series resistors per output
- OE pin for each output supports CLKREQ# applications
- Intelligent power-down mode when all OE# pins are high (all outputs off)
- Spread-spectrum tolerant
- Open drain LOS# output indicates a loss of the input clock and returns the outputs to a Low/Low state
- Flexible power sequencing: Input clock is internally biased so a floating input clock will not inject noise into the system
- Power Down Tolerant: Control inputs will not clamp to ground or VDD if a signal is applied before chip VDD is applied
- Space saving 4mm × 4mm 20-VFQFPN
- Easy AC coupling to other logic families; see application note AN-891.
Description
The 9DBL0455 device is a 4-output PCIe clock fanout buffer for PCIe Gen 1–7 applications. It has an open drain Loss of Signal (LOS) output to indicate the absence or presence of an input clock.
For information regarding evaluation boards and material, please contact your local sales representative.
Parameters
| Attributes | Value |
|---|---|
| Temp. Range (°C) | -40 to 85°C |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| VFQFPN | 4.0 x 4.0 x 1.0 | 20 | 0.5 |
Applications
- PCIe clock distribution in:
- PCIe Riser Cards
- NVME eSSD and JBOD
- High-Performance Computing and Accelerators
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Simulation Models
A detailed overview of IDT's full-featured PCI Express (PCIe) clock and timing solutions. The presentation addresses PCIe Gen 1, Gen 2, Gen 3, and Gen 4 architectures and how IDT's industry-leading solutions provide all the functions, features, and performance required by the application.
Presented by Ron Wade, System Architect at IDT. For more information visit the PCIe clocks page.
This is the first video in our PCIe series. In this video, we define PCIe architectures, focusing on common and separate clock architectures. Watch the rest of the video series below where Ron will cover the impact of different timing architectures.
In this episode, Ron Wade from IDT (acquired by Renesas) explains PCIe common clocking and its impact on timing solutions. Learn about using a single clock source, fan-out buffers, and the considerations for spread spectrum and non-spread spectrum clocking in PCIe systems.
In this video, we explore PCIe with separate reference clocks and the effects of clock selection. Learn how separate reference clocks work and their impact on system performance and stability.
This video provides a high-level overview of Separate Reference Clock with Independent Spread (SRIS) architectures for PCI Express systems, additional performance requirements that this clocking architecture imposes on the reference clocks, and some system implications encountered trying to implement the architecture.
An overview of IDT's full-featured PCI Express (PCIe) clock zero-delay buffers and fanout buffers addressing PCIe Gen 1, Gen 2, Gen 3, and Gen 4.
Presented by Ron Wade, System Architect at IDT.
An overview of PCI Express applications and how IDT's industry-leading portfolio of PCIe clock products addresses the requirements. The video briefly discusses PCIe riser cards, embedded SOC, and PCIe storage (NVME) examples.
Presented by Ron Wade, System Architect at IDT.
A brief overview of how data rates have changed from PCI Express (PCIe) Generation 1, Gen 2, Gen 3, Gen 4 and Gen 5.
Presented by Ron Wade, system architect at IDT. For more information about IDT's PCIe timing solutions, visit the PCI Express (PCIe) Clocks page.
A brief overview of how clock and timing specifications have changed from PCI Express (PCIe) Generation 1, Gen 2, Gen 3, Gen 4 and Gen 5.
Presented by Ron Wade, system architect at IDT (acquired by Renesas). For more information, visit Renesas's PCIe Timing Solutions page.
A brief overview of the PCI Express common clock (CC) jitter model, and the transfer functions as they relate to the timing PLLs. This model applies to PCI Express (PCIe) Gen 2, Gen 3, Gen 4 and Gen 5. The equations would be slightly different for other PCIe architectures, such as SRIS, SRnS, or data clocked.
Presented by Ron Wade, system architect at IDT (acquired by Renesas). For more information about Renesas's PCIe timing solutions, visit the PCI Express (PCIe) Clocks page.