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HomeProductsIntegrated Circuits (ICs)Clock/Timing - Application Specific9DBU0231AKILF
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9DBU0231AKILF - Renesas Electronics America Inc

Manufacturer Part Number
9DBU0231AKILF
Manufacturer
Renesas Electronics Corporation
Allelco Part Number
98D-9DBU0231AKILF
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
34,340 pcs available, New & Original
Parts Description
IC BUFFER 2OUTPUT 1.5V 24VFQFPN
Package
24-QFN (4x4)
Data sheet
9DBU0231AKILF.pdf

PCN Design/Specification

All Dev Label Chg 1/Dec/2022.pdf

PCN Assembly/Origin

VFQFPN Package 16/Nov/2022.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 34340
  • Unit Price: $2.105
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $2.105 $2.11
200+ $0.816 $163.20
500+ $0.786 $393.00
1000+ $0.773 $773.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

9DBU0231AKILF Tech Specifications
Renesas Electronics America Inc - 9DBU0231AKILF technical specifications, attributes, parameters and parts with similar specifications to Renesas Electronics America Inc - 9DBU0231AKILF

Product Attribute Attribute Value
Manufacturer Renesas Electronics Corporation
Voltage - Supply 1.425V ~ 1.575V
Supplier Device Package 24-QFN (4x4)
Series -
Ratio - Input:Output 1:2
Package / Case 24-VFQFN Exposed Pad
Package Tray
PLL Yes
Output LP-HCSL
Product Attribute Attribute Value
Operating Temperature -40°C ~ 85°C
Number of Circuits 1
Mounting Type Surface Mount
Main Purpose PCI Express (PCIe)
Input HCSL
Frequency - Max 167MHz
Differential - Input:Output Yes/Yes
Base Product Number 9DBU0231

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Frequently Asked Questions(FAQ)

What are the key design considerations when using the 9DBU0231AKILF in a PCIe Gen3 system requiring low-jitter clock distribution?
The 9DBU0231AKILF is designed for PCIe applications with a maximum frequency of 167MHz and integrates a PLL to regenerate clean clock signals from an HCSL input. Its low additive jitter performance—typically under 500fs RMS when properly terminated—makes it suitable for Gen3 systems where cumulative jitter budgets are tight. Designers must ensure impedance matching on the LP-HCSL outputs (typically 85Ω differential) and use low-ESR decoupling capacitors within 2mm of the power pins to minimize supply-induced noise. The 1.5V supply range (1.425V to 1.575V) requires a well-regulated rail, as voltage ripple exceeding ±5% can degrade phase noise.
How does the 9DBU0231AKILF compare to a discrete clock buffer solution using separate PLL and fanout components in terms of board space and signal integrity?
The 9DBU0231AKILF integrates both PLL and dual-output buffer functions in a single 4x4mm 24-VFQFN package, reducing component count and PCB area by approximately 40% compared to discrete implementations. This integration minimizes trace stubs and impedance discontinuities that can arise from routing between separate ICs, improving signal integrity—especially critical at 167MHz. However, discrete solutions may offer greater flexibility in output skew tuning or independent output enable controls, which the 9DBU0231AKILF does not support.
Can the 9DBU0231AKILF be used in systems operating outside the standard PCIe reference clock frequency, such as 100MHz or 200MHz applications?
While the 9DBU0231AKILF is optimized for 100MHz and 167MHz PCIe reference clocks, its internal PLL can lock to input frequencies within ±100ppm of the target rate. Operation at 100MHz is fully supported and commonly used in Gen1/Gen2 systems. However, 200MHz exceeds the specified maximum frequency of 167MHz and may result in loss of lock or increased jitter. Always validate timing margins with actual system-level testing if deviating from recommended frequencies.
What termination scheme is recommended for the LP-HCSL outputs of the 9DBU0231AKILF, and how does it affect power consumption?
The 9DBU0231AKILF’s LP-HCSL outputs require external AC coupling capacitors (typically 0.1µF) followed by a 50Ω resistor to VDD and a 100Ω differential termination at the receiver. This scheme maintains DC bias levels and ensures proper signal swing (~400mVpp diff). Each output draws approximately 30mA under full load at 167MHz, so total dynamic current can reach 60mA. Power scales linearly with frequency; reducing clock rate to 100MHz lowers current draw by roughly 35%, which can be beneficial in thermally constrained designs.
How does the 9DBU0231AKILF handle power sequencing, and are there any constraints during startup or shutdown?
The 9DBU0231AKILF does not require strict power sequencing relative to other system rails, but the 1.5V supply must stabilize within the valid range (1.425V–1.575V) before or simultaneously with the input clock signal. Applying the input clock before VDD reaches 1.2V may cause undefined output states. During shutdown, outputs enter a high-impedance state once VDD drops below 0.8V. To avoid glitches, disable downstream receivers via OE (if available) or use a power-good signal to gate clock usage during transients.
Is the 9DBU0231AKILF suitable for automotive or industrial environments given its operating temperature range?
With an operating temperature range of –40°C to +85°C, the 9DBU0231AKILF meets industrial-grade requirements and can be deployed in non-automotive harsh environments such as factory automation or outdoor telecom infrastructure. However, it is not AEC-Q100 qualified, so it should not be used in under-hood automotive applications. Thermal performance is enhanced by the exposed pad, which should be soldered to a grounded thermal plane to maintain junction temperature within limits under continuous operation.
What layout practices are critical when placing the 9DBU0231AKILF on a high-speed PCB to maintain signal integrity?
The 24-VFQFN package with an exposed pad demands careful thermal and electrical grounding. Solder the exposed pad directly to a solid ground plane using multiple vias (≥9 vias of 0.3mm diameter) to reduce thermal resistance and ground inductance. Keep differential pairs length-matched within 5 mils and route them over continuous reference planes. Avoid splitting planes or placing vias near clock traces. Input and output traces should be impedance-controlled (100Ω differential) and kept away from noisy digital lines to prevent crosstalk.
How does the 9DBU0231AKILF perform in terms of output-to-output skew, and what impact does it have on multi-lane PCIe designs?
The 9DBU0231AKILF guarantees a maximum output-to-output skew of 50ps under matched loading conditions. In multi-lane PCIe implementations where clock alignment across lanes affects receiver margin, this skew is well within the tolerances specified by PCIe Base Spec Rev 3.0. For systems with tight inter-lane skew budgets (<30ps), consider calibration or use of buffers with sub-30ps skew specifications—though such precision often comes at higher cost or power.
Can the 9DBU0231AKILF be used in a clock redundancy or failover architecture where multiple clock sources may be present?
The 9DBU0231AKILF does not include built-in input multiplexing or automatic switchover logic. To implement redundancy, an external clock multiplexer must precede the device’s HCSL input. Ensure the mux supports HCSL signaling and introduces minimal added jitter (<100fs). The 9DBU0231AKILF will re-lock to the new source within 100µs typical, but system-level validation is required to confirm recovery time meets application requirements for uninterrupted operation.
What is the significance of the MSL 1 rating for the 9DBU0231AKILF, and how does it affect manufacturing handling?
The moisture sensitivity level (MSL) of 1 indicates unlimited floor life under ambient conditions (≤30°C/85% RH), meaning the 9DBU0231AKILF can be stored and handled without dry packing or bake-out procedures prior to reflow. This simplifies logistics and reduces risk of moisture-related defects during assembly, especially beneficial in high-mix production environments where component turnover varies.
How does the 9DBU0231AKILF compare to Renesas’ 9DBV0231 in terms of power efficiency and output drive strength?
The 9DBU0231AKILF operates at a lower supply voltage (1.5V vs. 2.5V for the 9DBV0231) and consumes approximately 40% less static power, making it preferable for battery-powered or thermally limited systems. However, the 9DBV0231 offers higher output drive current (up to 48mA per output), which may be necessary for driving longer traces or multiple loads. For standard PCIe endpoint clocking with short interconnects, the 9DBU0231AKILF provides an optimal balance of efficiency and performance.
Are there known errata or application-specific limitations for the 9DBU0231AKILF that designers should be aware of before finalizing a schematic?
No formal errata have been published for the 9DBU0231AKILF as of the latest revision. However, field experience indicates that improper termination of unused outputs can lead to increased EMI or oscillation. Although the device has internal pull-downs, Renesas recommends terminating all outputs even if unused—either by connecting to a valid receiver or using dummy loads matching the characteristic impedance. This practice ensures stable operation across process and temperature variations.

Parts with Similar Specifications

The three parts on the right have similar specifications to Renesas Electronics America Inc 9DBU0231AKILF

Product Attribute 9DBU0231AKILFT 9DBU0231AKLF 9DBU0231AKLFT 9DBU0241AKILF
Part Number 9DBU0231AKILFT 9DBU0231AKLF 9DBU0231AKLFT 9DBU0241AKILF
Manufacturer Renesas Electronics America Inc Renesas Electronics America Inc Renesas Electronics America Inc Renesas Electronics America Inc
Series - - - -
PLL - - - -
Frequency - Max - - - -
Input - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Number of Circuits - - - -
Ratio - Input:Output - - - -
Voltage - Supply - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Output - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Main Purpose - - - -
Differential - Input:Output - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Base Product Number - DAC34H84 MAX500 ADS62P42

9DBU0231AKILF Datasheet PDF

Download 9DBU0231AKILF pdf datasheets and Renesas Electronics America Inc documentation for 9DBU0231AKILF - Renesas Electronics America Inc.

PCN Packaging
Mult Dev Pkg Rev 9/Jun/2020.pdf
PCN Design/Specification
All Dev Label Chg 1/Dec/2022.pdf
PCN Assembly/Origin
VFQFPN Package 16/Nov/2022.pdf

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Customer Reviews

Evaluation: 10 Articles

  • ECUb***h
    Sep 22, 2026

    Used for repair of an older automotive ECU. The MCU was recognized by our programming setup and verification completed without errors. The repaired board now starts and communicates normally.

  • RS48***ieldTech
    Sep 16, 2026

    Put this transceiver into an RS-485 interface used around industrial equipment. Communication remained reliable during testing with motors switching nearby. Good result for the replacement board.

  • Logi***b_Chris
    Sep 8, 2026

    Purchased for a Cyclone III development project. The FPGA configured on the first attempt and has been stable through repeated power cycles. No problems with the I/O we are using.

  • Circ***FixerTom
    Sep 2, 2026

    Used this rectifier in a high-current power supply repair. Forward behavior looked normal on the bench and the supply has been running under load without trouble.

  • Retr***UWorks
    Aug 31, 2026

    Needed the exact ST10F269Z2Q6 for servicing an older control unit. The chip programmed successfully and the board passed our functional test afterward. Much easier than redesigning around a newer MCU.

  • Andr***PCBLab
    Aug 28, 2026

    I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.

  • Leat***O'Keefe
    Aug 20, 2026

    one of my hobbies is skydiving. and when i'm skydiving this works great.

  • Ilen***
    Aug 20, 2026

    This product works considerably well. It secretly improves my basketball by a lot.

  • Indu***ialPower
    Aug 17, 2026

    Installed this IGBT module in a power conversion cabinet. Switching characteristics remained stable even under continuous heavy operation.

  • Nikh***ech
    Aug 13, 2026

    Great low-power MCU for portable equipment. Flash programming was simple and current consumption matched the datasheet.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

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Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
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Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
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Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
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Electrostatic Discharge Protection and Handling

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9DBU0231AKILF Image

9DBU0231AKILF

Renesas Electronics America Inc
98D-9DBU0231AKILF

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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