9ZML1255AKILFT

Overview

The Renesas 9ZML1255A is a Z-BUFFER MUX clock driver designed for high-performance computing and PCIe applications. It features a 2:12 differential input-to-output ratio, supporting frequencies up to 400 MHz. The device utilizes LP-HCSL outputs with integrated 85Ω termination, eliminating external resistors. It operates on a 3.3V supply (3.135V–3.465V) within an industrial temperature range of -40°C to +85°C. Packaged in a 72-VFQFPN (10x10 mm) exposed pad format, it supports spread spectrum inputs and offers selectable PLL bandwidth or bypass modes for jitter optimization.

Feature Summary

• 2:12 Differential Input/Output Ratio
• LP-HCSL Outputs with Integrated 85Ω Termination
• Spread Spectrum Tolerance
• Selectable PLL Bandwidth or Bypass Mode

Applications

• PCI Express Gen1-7 Clocking
• Servers and High-Performance Computing
• NVMe Storage Systems

Procurement Notes

Verify the suffix 'KILFT' corresponds to the tape-and-reel packaging configuration as indicated by the 'T' designation. Confirm moisture sensitivity level (MSL) requirements prior to assembly. Ensure the ordering part number matches the specific package variant required for the target PCB footprint.

Selection Notes

Select this component when a 2:12 mux topology with LP-HCSL outputs is required. It is suitable for designs needing spread spectrum compatibility and low-noise clock cleaning via its internal PLL. Verify that the 72-VFQFPN package dimensions fit the board layout constraints.

Part Context

This part belongs to the 9ZML1255 series of enhanced performance DB1200ZL derivatives. It serves as a second-generation solution for complex architectures like SRIS and SRNS clocking, offering improved phase jitter performance compared to previous generations.

Replacement Considerations

The 9ZML1256AKILFT is a pin-compatible upgrade within the same family. Verify if the additional features of the 9ZML1256 are necessary or if the 9ZML1255 meets the specific design requirements.