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Renesas 9DBV0531AKILF
- Part No.:
- 9DBV0531AKILF
- Manufacturer:
- Renesas
- Category:
- Specialized
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
9DBV0531AKILF.pdf
- Description:
- VFQFPN 5.00X5.00X0.90 MM, 0.50MM
- Quantity:
- Payment:
- Shipping:
Inventory:1,210
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Product details
Overview
9DBV0531AKILF from Renesas Electronics is a 5-output, 1.8V low-power PCIe Gen5 fanout buffer with LP-HCSL outputs, 3.3V-tolerant SMBus interface, and OE#-controlled output enable per channel. It delivers <40fs RMS additive phase jitter in Common Clocked architecture and supports 1–200MHz input frequencies for high-speed server clock distribution.
For engineers reviewing the 9DBV0531AKILF datasheet, 9DBV0531AKILF pinout, 9DBV0531AKILF application, or 9DBV0531AKILF equivalent, this device is selected for PCIe Gen5 timing integrity, low-power HCSL drive without external termination resistors, and SMBus-configurable slew rate and amplitude in compact 32-VFQFPN packaging.
Technical Context
The 9DBV0531AKILF implements a zero-delay fanout architecture with differential input receiver (CLK_IN/CLK_IN#) and five independent LP-HCSL differential outputs (DIF0–DIF4), each with dedicated active-low OE# control. It operates across -40°C to +85°C with separate 1.8V analog (VDDR1.8), digital (VDDDIG1.8), and output (VDDO1.8) rails.
Its SMBus engine supports three selectable addresses via vSADR_tri, enabling multi-device configuration on shared buses. The device integrates internal 120kΩ pull-downs on all OE# pins and a pull-up on ^CKPWRGD_PD#, and requires no external configuration to operate - default settings are factory-programmed.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output count | 5 LP-HCSL differential outputs (DIF0–DIF4), each with individual OE# control |
| Additive phase jitter (PCIe Gen5 CC) | <40fs RMS - meets PCIe Gen5 timing budget for common-clocked systems |
| 12kHz–20MHz additive jitter | 165fs RMS at 156.25MHz - critical for SerDes reference clock stability |
| Output-to-output skew | <50ps - ensures tight timing alignment across PCIe lanes |
| Power consumption | 41mW typical at full operation - enables thermal-efficient dense server board layouts |
| Operating frequency range | 1MHz to 200MHz - supports PCIe Gen1–Gen5, SRIS/SRNS, and non-PCIe clocks |
| Package | 32-pin VFQFPN, 5 × 5 mm, 0.5 mm pitch - surface-mount compatible with standard reflow profiles |
Pinout & Package
9DBV0531AKILF is housed in a 32-pin Very Thin Quad Flat No-Lead (VFQFPN) package, 5 mm × 5 mm, 0.5 mm pitch, with exposed pad (EPAD) connected to GND for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| vOE0# | Active-low output enable for DIF0/DIF0# | Internal 120kΩ pull-down; drives output pair when logic low |
| vOE1# | Active-low output enable for DIF1/DIF1# | Independent control per output pair; supports dynamic lane power gating |
| vOE2# | Active-low output enable for DIF2/DIF2# | Enables PCIe CLKREQ#-compatible power management per lane |
| vOE3# | Active-low output enable for DIF3/DIF3# | Allows selective shutdown of unused outputs to reduce system power |
| vOE4# | Active-low output enable for DIF4/DIF4# | Full per-output granularity matches PCIe root complex and endpoint requirements |
| CLK_IN / CLK_IN# | Differential reference clock input | Accepts 300mV min differential swing; supports 1–200MHz with 40–60% duty cycle |
| DIF0–DIF4 / DIF0#–DIF4# | LP-HCSL differential clock outputs | 100Ω integrated termination eliminates four external resistors per pair (9DBVxx41 variant); 33Ω option available for 85Ω/100Ω system compatibility |
| SCLK_3.3 / SDATA_3.3 | SMBus interface (3.3V tolerant) | Enables runtime configuration of slew rate, amplitude, and device address without requiring reset |
| ^CKPWRGD_PD# | Power-good / power-down control | Pull-up enabled; low asserts power-down mode with sub-1μA total IDDOPD current |
| vSADR_tri | Tri-level SMBus address select | Three-state input (GND/VDD/float) selects one of three SMBus addresses for multi-device bus sharing |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 100Ω LP-HCSL termination | Eliminates four external 50Ω resistors per output pair - reduces BOM count, PCB area, and signal path discontinuities |
| Per-output OE# control with internal pull-down | Enables PCIe CLKREQ#-compliant lane-level power gating without external logic or pull resistors |
| SMBus-selectable slew rate per output | Optimizes EMI vs. edge speed trade-off per clock domain - fast/slow settings configurable in-system |
| Factory-default operation | No SMBus initialization required - device powers up ready to distribute clock with zero firmware overhead |
| 3.3V-tolerant SMBus I/O | Interoperates directly with 3.3V host controllers without level shifters - simplifies system integration |
Applications
| PCIe Gen5 Server Clock Distribution | nVME Storage Controller Timing |
|---|---|
|
Use Scenario: Distributing 100MHz/156.25MHz reference clocks from a single PCIe Gen5 root complex to multiple downstream endpoints in 2U/4U rack servers. IC Role / Device Role / Timing Role: Fanout buffer providing low-skew, low-jitter replication of differential reference clock to five PCIe slots or CXL devices. Use Value: Meets PCIe Gen5 Common Clocked additive jitter limit (<40fs RMS) while enabling per-slot power gating via OE# pins. |
Use Scenario: Driving clock inputs of dual-port NVMe SSD controllers and associated PHYs in enterprise storage enclosures. IC Role / Device Role / Timing Role: Low-power HCSL fanout buffer delivering matched-phase clocks to controller and NAND interface domains. Use Value: 50ps max output-to-output skew ensures simultaneous sampling across high-speed PCIe/NVM Express lanes. |
| Industrial PCIe-Based Accelerator Card | High-Density Networking Switch Fabric |
|
Use Scenario: Providing synchronized clocking to FPGA-based AI accelerators and co-processor modules operating in extended temperature environments. IC Role / Device Role / Timing Role: Industrial-grade (–40°C to +85°C) PCIe clock buffer with SMBus configurability for field-upgradable timing parameters. Use Value: SMBus-addressable design allows firmware-controlled slew rate tuning to compensate for aging or thermal drift in deployed systems. |
Use Scenario: Feeding clock inputs of multiple 10/25/100GbE PHYs and packet processors on a single switch line card. IC Role / Device Role / Timing Role: Multi-output clock distributor supporting both PCIe Gen4 and Ethernet reference frequencies (125MHz, 156.25MHz). Use Value: 1–200MHz operating range and spread-spectrum compatibility support mixed-protocol timing architectures without redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PCIe fanout buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IDT8T49N242B | 8-output, 2.5V core, LVDS/HCSL programmable outputs; higher power (120mW), larger 48-VFQFPN package | Supports broader frequency range (0.1–750MHz) but lacks PCIe Gen5-optimized jitter performance | Select when >5 outputs or wider frequency coverage is required; not drop-in due to voltage and pinout mismatch |
| Si53320-B-GM | 5-output, 1.8V, LVPECL/LVDS outputs; no integrated HCSL termination; requires external resistors | Higher additive jitter (65fs RMS @ Gen5 CC); no per-output OE# - only global enable | Choose if LVPECL interface is mandatory; otherwise 9DBV0531AKILF offers lower jitter, lower power, and simpler layout |
Compared with IDT8T49N242B and Si53320-B-GM, the 9DBV0531AKILF uniquely combines PCIe Gen5-compliant jitter, per-output power control, integrated LP-HCSL termination, and industrial temperature support in a compact 5×5 mm footprint - making it optimal for space-constrained, high-integrity PCIe timing applications.
Availability
9DBV0531AKILF is available at Aetrix Electronics and suitable for servers, nVME storage subsystems, and industrial accelerator cards requiring stable component supply, long-term lifecycle support, and PCIe Gen5 timing compliance.
Supply support for 9DBV0531AKILF 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 is a global semiconductor leader specializing in microcontrollers, analog, power, and timing solutions for automotive, industrial, and datacenter markets.
The 9DBV0531AKILF belongs to Renesas' Full Featured PCIe family of fanout buffers, engineered specifically for low-jitter, low-power clock distribution in PCIe Gen1–Gen5 systems with emphasis on thermal efficiency and system-level configurability.
FAQ
What is the primary function of the 9DBV0531AKILF in a PCIe Gen5 system?
The 9DBV0531AKILF functions as a low-jitter, 5-output fanout buffer that replicates and distributes a differential reference clock (e.g., 100MHz or 156.25MHz) to multiple PCIe Gen5 endpoints. Its <40fs RMS additive phase jitter in Common Clocked architecture ensures compliance with PCIe Gen5 timing budgets, while per-output OE# pins support CLKREQ#-driven power gating - a key requirement for modern server and storage platforms using 9DBV0531AKILF.
Does the 9DBV0531AKILF require external termination resistors for LP-HCSL outputs?
No. The 9DBV0531AKILF integrates 100Ω termination on-chip for its LP-HCSL outputs, eliminating the need for four external 50Ω resistors per differential pair. This reduces PCB area, BOM cost, and signal integrity risks from stubs or mismatches. The device is configured as a 9DBVxx41 variant, confirming internal 100Ω termination per the datasheet's "9DBVxx41" designation referenced in Features.
How does the SMBus interface of the 9DBV0531AKILF support system-level configuration?
The 9DBV0531AKILF features a 3.3V-tolerant SMBus interface with three selectable addresses (via vSADR_tri) and supports runtime configuration of slew rate per output, differential amplitude, and other parameters - all without requiring device reset. Its factory-default configuration means SMBus communication is optional; the 9DBV0531AKILF operates immediately upon power-up, simplifying boot sequences while retaining flexibility for field tuning.
What is the significance of the ^CKPWRGD_PD# pin on the 9DBV0531AKILF?
The ^CKPWRGD_PD# pin is an active-low power-down control with internal 120kΩ pull-up. When driven low, it places the 9DBV0531AKILF into ultra-low-power mode (IDDOPD < 0.1mA), disabling all outputs while preserving register state. A rising edge exits power-down and initiates clock stabilization (~1ms). This pin directly supports PCIe CLKREQ# functionality, enabling dynamic power management aligned with link state transitions in systems using the 9DBV0531AKILF.
Can the 9DBV0531AKILF be used in industrial temperature applications?
Yes. The 9DBV0531AKILF is rated for operation from –40°C to +85°C (industrial temperature range), with validated electrical characteristics and thermal resistance (θJA = 39°C/W for NLG32 package) across this full range. Its VDDx supply tolerance (1.7–1.9V), robust input/output specs, and guaranteed jitter performance at elevated temperatures make it suitable for ruggedized networking, industrial PCIe accelerators, and embedded storage systems deploying the 9DBV0531AKILF.
9DBV0531AKILF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tray
- 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
9DBV0531AKILF FAQ
1.How can I place an order for 9DBV0531AKILF through Aetrix?
Please submit a Request for Quotation (RFQ) for 9DBV0531AKILF 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 9DBV0531AKILF reliable?
The price and inventory of 9DBV0531AKILF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 9DBV0531AKILF is usually 5 days.
3.What payment methods are accepted for 9DBV0531AKILF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 9DBV0531AKILF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 9DBV0531AKILF?
9DBV0531AKILF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 9DBV0531AKILF 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 9DBV0531AKILF?
For technical support, including 9DBV0531AKILF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 9DBV0531AKILF requirements.
6.How does Aetrix verify that 9DBV0531AKILF is sourced from the original manufacturer or authorized distributors?
All 9DBV0531AKILF 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 9DBV0531AKILF meets industry standards.
7.What is the process for return or replacement of 9DBV0531AKILF?
All 9DBV0531AKILF units undergo pre-shipment inspection (PSI). If there is an issue with 9DBV0531AKILF, 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 9DBV0531AKILF part is unused and in its original packaging.
Return procedure for 9DBV0531AKILF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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