9ZML1255AKILF

Overview

The Renesas 9ZML1255AKILF is a Z-BUFFER MUX clock driver designed for high-performance computing applications. It features a 2:12 ratio with two differential inputs and twelve LP-HCSL outputs, supporting frequencies up to 400 MHz. The device operates on a 3.3V supply (3.135V to 3.465V) within an industrial temperature range of -40°C to +85°C. Packaged in a 72-VFQFPN exposed pad (10x10 mm), it integrates spread spectrum tolerance and glitch-free switching capabilities for PCIe architectures.

Feature Summary

• 2:12 Multiplexing Ratio: Accepts two differential input signals and provides twelve low-power HCSL (LP-HCSL) outputs.
• High Frequency Support: Operates at maximum frequencies up to 400 MHz, suitable for PCIe Gen 1 through Gen 7.
• Glitch-Free Switching: Supports selectable asynchronous or glitch-free switching modes to ensure signal integrity during transitions.
• Spread Spectrum Tolerance: Designed to accept spread spectrum input signals, aiding in EMI reduction.

Applications

• Servers and High-Performance Computing systems
• NVMe Storage controllers
• Networking Accelerators
• Industrial Control systems

Procurement Notes

Verify the suffix 'KILF' corresponds to the tray packaging configuration as indicated by distributor specifications. Confirm RoHS compliance status directly from the manufacturer datasheet prior to integration. Ensure moisture sensitivity level handling procedures are followed during assembly due to the component's humidity-sensitive classification.

Selection Notes

Select this model when a 2-to-12 clock distribution ratio is required for LP-HCSL loads. It is appropriate for designs needing spread spectrum input compatibility and glitch-free mux switching. Compare against the 9ZML1256 series if reel packaging is preferred over trays, noting that suffix variations may indicate package type changes rather than functional differences.

Part Context

This component belongs to the 9ZML1255A series of Z-BUFFER MUX devices from Renesas Electronics. It is part of the broader DB1200ZL family of clock drivers optimized for PCI Express applications. The device serves as a critical timing element for distributing reference clocks across multiple endpoints in complex digital systems.

Replacement Considerations

The 9ZML1256AKILFT offers identical electrical functionality but utilizes a tape-and-reel package instead of a tray. Verify pinout and thermal characteristics remain consistent before substituting to ensure board layout compatibility.