9DBL0442CKILFT

Overview

The Renesas 9DBL0442CKILFT is a four-output PCIe clock buffer operating at 3.3V with integrated 100Ω termination resistors. It supports Low Power HCSL (LP-HCSL) signaling for PCIe Gen1 through Gen5 architectures, including Common Clock (CC), Separate Reference Independent Spread (SRIS), and Separate Reference No Spread (SRNS). The device functions in fan-out mode from 1MHz to 200MHz. Key electrical parameters include a supply voltage range of 3.135V to 3.465V, a maximum input frequency of 125MHz, and an operating temperature range of -40°C to +85°C.

Feature Summary

• Four LP-HCSL outputs with integrated 100Ω differential termination resistors
• Supports PCIe Gen1–Gen5 CC, SRIS, and SRNS clocking architectures
• Fan-out operation frequency range of 1MHz to 200MHz
• Three selectable SMBus addresses for configuration flexibility

Applications

• PCIe adapter cards
• NVMe storage systems
• Network infrastructure equipment
• Industrial control and embedded systems

Procurement Notes

Verify RoHS compliance status and moisture sensitivity level (MSL) ratings prior to procurement. Confirm the specific suffix 'CKILFT' corresponds to the required tape-and-reel packaging quantity and lead finish specifications. Ensure the component meets the intended thermal management requirements for the -40°C to +85°C industrial operating range.

Selection Notes

Select this model when 100Ω transmission line termination is required directly on-chip, eliminating external resistors. Choose over the 9DBL0445 variant if the design utilizes 100Ω lines rather than 85Ω. Ensure the system clock frequency falls within the 1MHz to 200MHz fan-out range and that the 3.3V supply voltage remains within the specified 3.135V to 3.465V limits.

Part Context

This component belongs to the Renesas 9DBL0x family of low-power, high-performance PCIe clock buffers. The family provides scalable output counts from two to eight channels across various package types. The 9DBL0442C specifically denotes the four-channel variant with 100Ω integrated termination, designed to reduce board space and simplify PCB layout for high-speed serial interfaces.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pin-to-pin compatibility and electrical parameter alignment before considering alternative vendors or different series components.