9ZXL1930DKILFT

Overview

The 9ZXL1930DKILFT is a second-generation differential buffer from Renesas Electronics, belonging to the 9ZXL1930D series. It functions as an enhanced-performance derivative of the DB1900Z architecture and serves as a pin-compatible upgrade to the 9ZXL1930B. The device features 19 differential outputs utilizing LP-HCSL signaling with a fixed output impedance of 85Ω. It accepts a single HCSL input signal within a frequency range of 1 MHz to 400 MHz. Key technical improvements include significantly reduced phase jitter compared to previous generations and fixed external feedback for low drift in critical applications.

Feature Summary

• 19 Differential Outputs: Provides 19 LP-HCSL outputs with 85Ω output impedance, eliminating the need for external termination resistors.
• Enhanced Jitter Performance: Offers improved phase jitter characteristics over the 9ZXL1930B while maintaining pin compatibility.
• Fixed External Feedback: Incorporates fixed external feedback mechanisms to maintain low drift, suitable for QPI/UPI applications.
• Spread Spectrum Compatible: Accepts spread spectrum input clocks to facilitate EMI reduction in system designs.

Applications

• PCIe Clock Distribution
• Processor Clock Buffers
• Zero-Delay Buffering

Procurement Notes

Verify the specific suffix 'KILFT' against official Renesas documentation to confirm tape-and-reel packaging and lead-free status. Ensure the selected variant matches the required moisture sensitivity level (MSL) and operating temperature range for the target application environment.

Selection Notes

Select this component when upgrading from the 9ZXL1930B to benefit from lower jitter without altering board layout. Confirm that the system requires 19 LP-HCSL outputs and can support the 3.3V supply voltage. Evaluate if the fixed external feedback configuration aligns with the specific drift requirements of the connected memory or processor interfaces.

Part Context

This part belongs to the 9ZXL1930D family, which represents second-generation enhancements over the original DB1900Z derivatives. The D-series variants focus on performance improvements such as jitter reduction while retaining the physical footprint and pinout of earlier models to simplify migration paths for existing designs.

Replacement Considerations

The 9ZXL1930B is the direct predecessor offering pin-compatible replacement. For designs requiring further performance upgrades, the 9ZXL1950D provides similar functionality with potentially different output configurations.