9ZXL1550BKLF

Overview

The 9ZXL1550BKLF is a clock buffer from the Renesas 9ZXL1550 series, designed as a DB1900Z derivative. It features 15 low-power HCSL (LP-HCSL) outputs driven by a differential input. The device operates within a supply voltage range of 3.135 V to 3.465 V and supports maximum input frequencies up to 400 MHz. Packaged in a 64-pin VFQFPN format, it integrates output terminations to reduce board space and power consumption significantly compared to original designs. It utilizes fixed external feedback for low drift performance.

Feature Summary

• 15 LP-HCSL outputs with integrated termination resistors
• Differential input accepting HCSL signals
• Low power consumption with >50% reduction vs. 9ZX21501
• Pin-compatible with 9ZXL1530

Applications

• PCI Express Gen 1/2/3 systems
• QuickPath Interconnect (QPI) applications
• Ultra Path Interconnect (UPI) applications

Procurement Notes

Verify the specific suffix 'BKLF' against official Renesas documentation to confirm package variant and tape/reel specifications. Ensure compatibility with moisture sensitivity levels and reflow soldering profiles defined in the datasheet. Confirm availability status directly with authorized distributors as stock levels fluctuate.

Selection Notes

Select this component when designing for QPI/UPI or PCIe interfaces requiring low skew and reduced power dissipation. The integrated output termination simplifies PCB layout. Ensure the design accommodates the 3.135V–3.465V supply requirement and utilizes fixed external feedback for optimal drift performance in demanding timing scenarios.

Part Context

This part belongs to the 9ZXL1550 family of low-power clock buffers. It serves as a derivative of the DB1900Z architecture, optimized for high-speed serial link clock distribution. The series targets server and high-performance computing environments where signal integrity and power efficiency are critical constraints.

Replacement Considerations

The 9ZXL1550DKILF is a pin-compatible alternative within the same series. Verify that the packaging difference (Tray vs. Reel) aligns with assembly requirements. No functional changes are indicated by the suffix variation unless explicitly stated in the manufacturer's Product Change Notification.