9ZX21902AKLF

Description：IC CLOCK AND TIMING
Series：*

SKU:3b1d09a64ed7 Category: Application Specific Clock/Timing Brand: Renesas Electronics Corporation

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Product introduction

Product Detailed Parameters

Description：IC CLOCK AND TIMING
Series：*
PLL：-
Mfr：Renesas Electronics Corporation
Main Purpose：-
Input：-
Output：-
Number of Circuits：-
Ratio - Input:Output：-
Differential - Input:Output：-
Frequency - Max：-
Voltage - Supply：-
Operating Temperature：-
Mounting Type：-
Package / Case：-
Supplier Device Package：-

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9ZX21902AKLF

Overview

The 9ZX21902AKLF is a high-performance clock buffer manufactured by Renesas Electronics, designed for demanding digital signal processing applications. It features 19 outputs and supports maximum input and output frequencies of 400 MHz. The device utilizes HCSL output type with a maximum propagation delay of 4.5 ns. It operates within a supply voltage range of 3.135 V to 3.465 V and functions in temperatures from 0°C to +70°C. Packaged in a VFQFPN-72 format, it serves as a critical timing component for PCIe Gen2/3 and QPI systems.

Feature Summary

Provides 19 differential outputs for extensive fan-out distribution
Supports high-speed data rates up to 400 MHz for PCIe and QPI interfaces
Utilizes HCSL output signaling for reliable noise immunity
Designed for low skew and precise timing alignment in complex digital systems

Applications

PCI Express Gen2 and Gen3 interface buffering
QuickPath Interconnect (QPI) system timing distribution
High-performance server and storage controller architectures
Network switch and router timing infrastructure

Procurement Notes

Verify the specific suffix 'AKLF' against official Renesas documentation to confirm package variant and tape-and-reel specifications. Ensure compatibility with RoHS directives and check moisture sensitivity levels prior to surface mount assembly. Confirm that the ordering part number matches the exact electrical characteristics required for the target design, as minor suffix variations may indicate different packaging or testing criteria.

Selection Notes

Select this component when designing systems requiring significant fan-out for high-speed serial interfaces like PCIe or QPI. The 19-output configuration reduces board space compared to multiple discrete buffers. Consider the 400 MHz frequency limit and HCSL output requirements to ensure signal integrity matches the receiving devices. Evaluate thermal performance within the specified operating temperature range for dense PCB layouts.

Part Context

This part belongs to the 9ZX21901 series of Zbuffer clock buffers from Renesas. These components are engineered to provide robust clock distribution for multi-lane high-speed serial links. The series is commonly integrated into platforms requiring strict timing synchronization across numerous endpoints, such as enterprise servers and high-throughput networking equipment.