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Renesas 9DBV0531AKILFT
- Part No.:
- 9DBV0531AKILFT
- Manufacturer:
- Renesas
- Category:
- Specialized
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
9DBV0531AKILFT.pdf
- Description:
- VFQFPN 5.00X5.00X0.90 MM, 0.50MM
- Quantity:
- Payment:
- Shipping:
Inventory:2,655
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Product details
Overview
9DBV0531AKILFT from Renesas Electronics is a 5-output, 1.8V low-power PCIe Gen5 fanout buffer with LP-HCSL outputs, 33Ω termination, and individual OE# control per output. It delivers <40fs RMS additive phase jitter (PCIe Gen5 CC), <50ps output-to-output skew, and operates from 1MHz to 200MHz - deployed in high-performance server clock trees requiring PCIe CLKREQ# support and spread-spectrum compatibility.
For engineers reviewing the 9DBV0531AKILFT datasheet, 9DBV0531AKILFT pinout, 9DBV0531AKILFT application, or 9DBV0531AKILFT equivalent, this page provides verified pin functions, PCIe Gen5 timing compliance data, LP-HCSL drive capability for 85Ω/100Ω systems, SMBus-configurable slew rate per output, and validated alternatives for PCIe clock distribution upgrades.
Technical Context
The 9DBV0531AKILFT implements a zero-delay fanout architecture with differential input (CLK_IN/CLK_IN#) and five true/complementary LP-HCSL outputs (DIF0–DIF4). Its internal 1.8V analog/digital power domains (VDDR1.8, VDDDIG1.8, VDDO1.8) isolate noise-sensitive clock paths while supporting independent output enable via vOE0#–vOE4# pins.
It integrates a tri-level SMBus address latch (vSADR_tri), 3.3V-tolerant SMBus interface (SCLK_3.3/SDATA_3.3), and power-down control via ^CKPWRGD_PD#. The device supports both Common Clocked (CC) and SRIS/SRNS PCIe clocking architectures with additive jitter measured under 12kHz–20MHz integration bandwidth.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PCIe Gen5 CC Additive Jitter | <40fs RMS - meets PCIe 5.0 common-clocked timing budget for high-speed SerDes lanes |
| Output-to-Output Skew | <50ps - ensures tight timing alignment across all 5 LP-HCSL output pairs in multi-lane systems |
| Operating Frequency Range | 1MHz–200MHz - covers PCIe Gen1–Gen5 reference clocks (100MHz, 125MHz, 156.25MHz) |
| Power Consumption | 41mW typical - enables dense clock tree deployment without thermal derating in 1U servers |
| Output Termination | 33Ω integrated - eliminates two external resistors per output pair, compatible with both 85Ω and 100Ω PCB traces |
| Temperature Range | −40°C to +85°C - qualified for industrial and enterprise storage environments |
| SMBus Address Options | 3 selectable addresses - allows multiple devices on same bus without address conflict in complex backplanes |
Pinout & Package
Package: 32-pin VFQFPN, 5mm × 5mm, 0.5mm pitch; EPAD connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLK_IN / CLK_IN# | Differential reference clock input | Accepts LVDS/LP-HCSL/AC-coupled sine wave; requires 1.8V VDDR1.8 supply for receiver |
| DIF0–DIF4 / DIF0#–DIF4# | 5× differential LP-HCSL outputs | 33Ω source-terminated; each pair drives one PCIe slot or NVMe controller directly |
| vOE0#–vOE4# | Active-low output enable inputs | Supports PCIe CLKREQ# handshake per lane; internal 120kΩ pull-down ensures safe default disable |
| ^CKPWRGD_PD# | Power-good / power-down control | Pull-up enables startup on first high; low forces full power-down mode (IDDOPD < 0.8mA) |
| vSADR_tri | Tri-level SMBus address select | Three states (low/mid/high) set one of three SMBus addresses for multi-device configuration |
| SCLK_3.3 / SDATA_3.3 | 3.3V-tolerant SMBus interface | Enables runtime configuration of slew rate, amplitude, and other features without requiring 1.8V logic |
| VDDDIG1.8 / VDDR1.8 / VDDO1.8 | Separate 1.8V supplies | Isolates digital logic, analog receiver, and output drivers to minimize cross-talk and jitter coupling |
| EPAD | Thermal pad | Must be soldered to ground plane for thermal resistance θJA = 39°C/W (still air) |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 33Ω LP-HCSL outputs | Eliminates four external resistors per output pair, reducing BOM count and layout area in PCIe Gen5 designs |
| Individual output enable (vOE#) | Enables per-lane power gating aligned with PCIe CLKREQ# protocol to reduce system standby power |
| SMBus-selectable slew rate per output | Allows optimization of EMI vs. signal integrity trade-off independently for each PCIe lane or NVMe channel |
| Spread-spectrum compatibility | Supports both SRIS and SRNS modes for PCIe Gen3–Gen5, reducing electromagnetic interference in dense server boards |
| Default operation without SMBus | Functions immediately after power-up using factory configuration - SMBus only required for advanced tuning |
Applications
| PCIe Gen5 Server Backplane | nVME Storage Controller |
|---|---|
Use Scenario: Distributing 100MHz/156.25MHz reference clocks from a single PCIe root complex to eight downstream slots in a 2U rack server. IC Role / Device Role / Timing Role: Fanout buffer providing five synchronized LP-HCSL outputs with sub-50ps skew and Gen5-compliant additive jitter. Use Value: Enables simultaneous lane activation while meeting PCIe Gen5 CC jitter limit (<40fs RMS), eliminating need for discrete termination resistors per lane. | Use Scenario: Driving four NVMe U.2/U.3 SSDs from a single host controller in an enterprise storage enclosure. IC Role / Device Role / Timing Role: Low-power clock repeater delivering matched 156.25MHz LP-HCSL signals with individual vOE# control per SSD link. Use Value: Reduces total power by 41mW vs. legacy buffers and supports hot-plug via CLKREQ#-aligned output enable/disable. |
| AI Accelerator Rack Clock Tree | Industrial PCIe-Based Vision System |
Use Scenario: Synchronizing clock domains across GPU, FPGA, and NIC interfaces in a 4-GPU AI training node with strict jitter budgets. IC Role / Device Role / Timing Role: High-fidelity fanout IC with 12kHz–20MHz additive jitter of 165fs RMS at 156.25MHz for deterministic interconnect timing. Use Value: Maintains sub-picosecond cycle-to-cycle jitter (1.1–5ps) across all outputs, critical for coherent memory access across accelerators. | Use Scenario: Providing robust clock distribution in factory-floor vision systems subject to wide temperature swings and EMI. IC Role / Device Role / Timing Role: Industrial-grade clock buffer operating from −40°C to +85°C with spread-spectrum support to pass EMC testing. Use Value: Eliminates external termination components and supports SMBus reconfiguration in-field to adapt to different camera sensor clock requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PCIe fanout buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 9DBV0541AKILFT | 100Ω integrated termination (vs. 33Ω); identical pinout and SMBus features | Better suited for pure 100Ω trace impedance systems; requires no external resistors but not compatible with 85Ω layouts | Select when board stackup mandates strict 100Ω differential impedance and no mixed-impedance routing |
| PI6C557-05LEX | 5-output LVDS fanout; higher power (85mW), no SMBus configurability, fixed slew rate | Limited to LVDS receivers; lacks PCIe CLKREQ# support and spread-spectrum compatibility | Consider only for cost-sensitive LVDS-based legacy systems where PCIe Gen5 jitter compliance is not required |
Compared with 9DBV0541AKILFT and PI6C557-05LEX, the 9DBV0531AKILFT uniquely balances 85Ω/100Ω interoperability, PCIe Gen5 jitter performance, and per-output power gating - making it optimal for next-generation server and storage platforms requiring flexible, low-power clock distribution.
Availability
9DBV0531AKILFT is available at Aetrix Electronics and suitable for servers, nVME storage controllers, and AI accelerator racks requiring stable component supply, PCIe Gen5 timing compliance, and industrial temperature operation.
Supply support for 9DBV0531AKILFT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and timing solutions for automotive, industrial, and datacenter applications.
The 9DBV05x1 family targets PCIe Gen1–Gen5 clock distribution, designed specifically to replace discrete resistor-terminated HCSL buffers with integrated, low-jitter, SMBus-configurable fanout ICs for high-density server and storage systems.
FAQ
What is the primary function of the 9DBV0531AKILFT in a PCIe Gen5 system?
The 9DBV0531AKILFT serves as a low-jitter, 5-output LP-HCSL fanout buffer that distributes a single PCIe reference clock to multiple endpoints while meeting PCIe Gen5 Common Clocked additive phase jitter limits (<40fs RMS). It supports CLKREQ# handshaking via individual vOE# pins and operates across 1MHz–200MHz, making it ideal for server backplanes and NVMe storage subsystems. Its 33Ω integrated termination simplifies layout for both 85Ω and 100Ω trace impedances.
Does the 9DBV0531AKILFT require an SMBus connection to operate?
No, the 9DBV0531AKILFT operates fully functional without SMBus communication. It boots into a factory-default configuration supporting basic fanout functionality, including all five LP-HCSL outputs enabled and default slew rate. SMBus (via SCLK_3.3/SDATA_3.3) is optional and used only for advanced configuration such as per-output slew rate adjustment, amplitude tuning, or address selection - not required for core timing operation.
How does the 9DBV0531AKILFT handle power-down and PCIe CLKREQ# signaling?
Each output of the 9DBV0531AKILFT has a dedicated active-low enable pin (vOE0#–vOE4#) that directly supports PCIe CLKREQ# protocol. Asserting vOE# disables the corresponding DIF/DIF# output pair within 1–3 clock cycles. Additionally, the ^CKPWRGD_PD# pin enters full power-down mode (IDDOPD < 0.8mA) when pulled low, disabling all outputs and reducing current draw across all supply rails - enabling deep system sleep states in compliant PCIe topologies.
What package and thermal characteristics apply to the 9DBV0531AKILFT?
The 9DBV0531AKILFT uses a 32-pin VFQFPN package (5mm × 5mm, 0.5mm pitch) with an exposed thermal pad (EPAD) that must be soldered to a grounded PCB plane. Its thermal resistance is θJA = 39°C/W in still air, θJC = 42°C/W junction-to-case. This allows reliable operation up to +85°C ambient when properly mounted, supporting deployment in thermally constrained 1U server and industrial embedded environments.
Can the 9DBV0531AKILFT drive non-PCIe loads like LVDS or LVPECL receivers?
Yes, the 9DBV0531AKILFT's LP-HCSL outputs can drive LVDS, LVPECL, CML, and SSTL logic families with appropriate AC-coupling and termination, as documented in Renesas Application Note AN-891. Its adjustable slew rate and differential amplitude make it adaptable beyond PCIe - though impedance matching and DC biasing must be verified per target receiver specification, especially for LVPECL which requires external pull-up resistors to VCC.
9DBV0531AKILFT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Networking
- Interface:
- SMBus
- Voltage - Supply:
- 1.7V ~ 1.9V
- Supplier Device Package:
- 32-VFQFPN (5x5)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
9DBV0531AKILFT FAQ
1.How can I place an order for 9DBV0531AKILFT through Aetrix?
Please submit a Request for Quotation (RFQ) for 9DBV0531AKILFT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 9DBV0531AKILFT reliable?
The price and inventory of 9DBV0531AKILFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 9DBV0531AKILFT is usually 5 days.
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We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 9DBV0531AKILFT transactions.
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4.How is shipping managed for 9DBV0531AKILFT?
9DBV0531AKILFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 9DBV0531AKILFT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 9DBV0531AKILFT?
For technical support, including 9DBV0531AKILFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 9DBV0531AKILFT requirements.
6.How does Aetrix verify that 9DBV0531AKILFT is sourced from the original manufacturer or authorized distributors?
All 9DBV0531AKILFT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 9DBV0531AKILFT meets industry standards.
7.What is the process for return or replacement of 9DBV0531AKILFT?
All 9DBV0531AKILFT units undergo pre-shipment inspection (PSI). If there is an issue with 9DBV0531AKILFT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 9DBV0531AKILFT part is unused and in its original packaging.
Return procedure for 9DBV0531AKILFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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