9ZXL1950BKLF

Overview

The Renesas 9ZXL1950BKLF is a clock buffer within the 9ZXL1950 series, designed for high-performance timing applications. It features 19 differential outputs utilizing LP-HCSL signaling with an 85Ω output impedance. The device accepts a single HCSL input and supports frequencies from 1 MHz to 400 MHz. Operating on a 3.3V supply, it consumes approximately 712 mW of power. Packaged in a compact 10mm x 10mm 72-VFQFPN format, it is suitable for PCIe Gen 1–5 compliance and QPI/UPI interfaces.

Feature Summary

• 19 Differential Outputs: Provides 19 LP-HCSL outputs with integrated 85Ω termination, eliminating external resistors.
• PCIe Compliance: Supports PCIe Gen 1 through Gen 5 standards with low jitter performance.
• SMBus Control: Features software-controllable OE bits and 9 selectable SMBus addresses for flexible configuration.
• Spread Spectrum Compatible: Tracks spreading input clocks to assist in EMI reduction.

Applications

• PCI Express (Gen 1-5) Clock Distribution
• Quad Peripheral Interface (QPI) Systems
• Universal Peripheral Interface (UPI) Applications
• High-Speed Processor Clock Buffers

Procurement Notes

Verify the specific suffix 'BKLF' against official Renesas documentation to confirm package type and tape/reel specifications. Ensure compatibility with the 72-VFQFPN footprint and check moisture sensitivity level requirements for surface mount assembly processes.

Selection Notes

Select this component when a zero-delay buffer with 19 outputs is required for PCIe or QPI architectures. Compare phase jitter performance against the 9ZXL1950D variant if enhanced jitter specs are needed. Confirm that the 3.3V supply voltage and LP-HCSL output levels match the target system design constraints.

Part Context

The 9ZXL1950BKLF belongs to the second-generation 9ZXL1950 family, serving as a pin-compatible upgrade to earlier models like the 9ZXL1950B. It is part of Renesas' DB1900Z derivative line, optimized for critical timing applications requiring multiple differential outputs with minimal board space usage.

Replacement Considerations

The 9ZXL1950D is a documented pin-compatible upgrade offering improved phase jitter performance. Verify if the enhanced jitter characteristics of the D-series variant are necessary for the specific application before substituting.