9DBL0841BKILF

IC CLK FANOUT/BUFF ZD 48VFQFPN

# 9DBL0841BKILF – 8-Output PCIe Clock Buffer – Renesas Electronics

The 9DBL0841BKILF from Renesas Electronics is a high-performance, application-specific clock buffer designed for precision timing in advanced computing and communication systems. This IC provides reliable clock signal distribution, ensuring synchronization and stability for critical applications. PCX ensures you receive this quality component with fast shipping and dedicated customer support.

## Key Features
* **Function:** 1:8 Fanout Buffer for PCI Express (PCIe) Gen 1/2/3
* **Interface:** Features HCSL input and 8 HCSL outputs for superior signal integrity.
* **Integrated PLL:** Yes, for improved jitter performance.
* **Maximum Frequency:** 200MHz.
* **Supply Voltage:** Operates at 3.3V (3.135V ~ 3.465V).
* **Operating Temperature:** Robust performance across a wide range of -40°C to 85°C.
* **Package:** 48-VFQFPN (6×6) for surface mount (SMT) assembly.

## Technical Details
This single-circuit clock buffer is organized with a 1:8 input-to-output ratio. It accepts a single HCSL differential input and distributes it to eight identical HCSL differential outputs. Housed in a compact 48-VFQFN Exposed Pad package, it is designed for efficient thermal management and is suitable for high-density PCB designs. Its wide operating temperature range makes it versatile for various environmental conditions.

## Applications
This clock buffer is essential for synchronizing high-speed digital systems in:
* Data Center Servers and Storage Area Networks (SANs)
* Network Switches, Routers, and Communication Infrastructure
* High-Performance Computing (HPC) Systems
* PCIe Add-in Cards and Motherboards
* Telecommunications and Networking Equipment

## About the Manufacturer
Renesas Electronics Corporation is a premier global supplier of advanced semiconductor solutions. With a rich history of innovation and a vast portfolio of microcontrollers, analog, power, and SoC products, Renesas is a trusted name in the industry. Their components are known for their high quality, reliability, and performance, making them a go-to choice for designing cutting-edge electronic products across automotive, industrial, infrastructure, and IoT applications.

The company’s commitment to research and development ensures it remains at the forefront of technology, providing solutions that meet the evolving demands of the market. Renesas’s dedication to stringent quality control and manufacturing excellence guarantees that every component, including the 9DBL0841BKILF, meets the highest standards of performance and durability.

## About Clock Buffers
Clock buffers are fundamental integrated circuits (ICs) used to distribute a single clock signal to multiple destinations while maintaining signal integrity. They are critical in any digital system where precise timing and synchronization between different components are required. A high-quality buffer minimizes jitter, reduces skew, and prevents signal degradation, which is paramount for the stable operation of high-speed interfaces like PCIe, SATA, and Ethernet.

Without a dedicated clock buffer, a system’s master clock can become overloaded, leading to timing errors, data corruption, and overall system failure. By cleanly replicating and fanning out the clock signal, these devices ensure that every processor, memory module, and peripheral receives a stable and synchronized timing reference, which is the backbone of reliable digital system performance.

## Packaging Options
This product is supplied in a standard Tray packaging format, ideal for automated manufacturing processes.

## Frequently Asked Questions (FAQs)

**Question: What is the primary function of this Renesas IC?**
**Answer:** It is an 8-output clock buffer specifically designed to distribute a PCI Express (PCIe) clock signal to multiple devices within a system while maintaining low jitter and high signal integrity.

**Question: What does HCSL stand for and why is it used?**
**Answer:** HCSL stands for High-Speed Current Steering Logic. It is a differential signaling standard commonly used for PCIe clocks due to its good noise immunity and fast edge rates, which are essential for high-speed data transmission.

**Question: Is an external crystal or oscillator required for this part to function?**
**Answer:** No, this is a buffer. It requires an external input clock signal from another source, such as a crystal oscillator, to then distribute it.

**Question: What is the significance of the integrated PLL?**
**Answer:** The integrated Phase-Locked Loop (PLL) helps to clean up jitter on the input clock signal, resulting in lower jitter on the output clocks, which is critical for meeting strict PCIe timing specifications.

**Question: Can this buffer be used for applications other than PCIe?**
**Answer:** While it is optimized for PCIe protocols, its electrical characteristics (HCSL I/O, 200MHz max) may make it suitable for other high-speed differential clock distribution applications, though designers should always consult the datasheet to confirm compatibility.

**Question: The part is listed as ‘Obsolete’ by the manufacturer. Is it still available?**
**Answer:** Yes, PCX specializes in supplying both active and obsolete components. We maintain stock of hard-to-find parts to support the long-lifecycle needs of our customers in industrial, military, and aerospace sectors.

*Image is for representational purposes only. For complete technical details, please refer to the datasheet hosted on our site: [View 9DBL0841BKILF Datasheet on PCXCo.com](https://www.renesas.com/us/en/document/dst/9dbl02x2-04×2-06×1-08×1-family-datasheet)*

Ensure your design has the reliable timing it needs. **Add the Renesas 9DBL0841BKILF to your BOM and order from PCX today for fast delivery and expert support!**