9ZXL1231EKILF

Overview

The Renesas 9ZXL1231EKILF is a second-generation DB1200ZL differential clock buffer featuring 12 low-power HCSL (LP-HCSL) outputs. It operates within a supply voltage range of 3.135 V to 3.465 V and supports input frequencies up to 400 MHz. The device utilizes a 64-VFQFPN package with dimensions of 9 mm x 9 mm. Key electrical characteristics include a typical power consumption of 481 mW and support for spread spectrum inputs to reduce electromagnetic interference.

Feature Summary

• 12 LP-HCSL outputs eliminate the need for 24 external termination resistors, saving approximately 41 mm² of board area.
• Hardware control via nine selectable SMBus addresses allows multiple devices to share the same SMBus segment.
• Selectable PLL bandwidth minimizes jitter peaking in cascaded PLL topologies without requiring a power cycle.
• Supports PCIe Gen 1–5 compliance and tracks spreading input clocks for EMI reduction.

Applications

• Servers and high-performance computing systems
• NVMe storage controllers
• Networking accelerators
• Industrial control systems

Procurement Notes

Verify the specific suffix 'EKILF' against the manufacturer's current datasheet to confirm package type and moisture sensitivity level. Ensure compatibility with the required operating temperature range of -40°C to +85°C. Confirm that the 64-VFQFPN footprint matches the design layout before procurement.

Selection Notes

Select this component when a zero-delay buffer with 12 differential outputs is required for critical QPI/UPI applications. It serves as an enhanced-performance upgrade to the 9ZXL1231A model, offering improved phase jitter performance. Ensure the system design accommodates the 3.3 V core voltage requirement and the 9x9 mm package constraints.

Part Context

This part belongs to the 9ZXL series of second-generation zero-delay clock buffers. It is designed as a pin-compatible upgrade to the 9ZXL1231A, providing better jitter performance and increased system security features through hardware-controlled bypass and bandwidth settings.

Replacement Considerations

The 9ZXL1231AKILF is a related variant within the same family. Verify if the lower frequency or different packaging of alternative models meets the 400 MHz requirement. No direct cross-manufacturer substitutes are documented in the provided data.