9ZML1256AKILFT

Overview

The Renesas 9ZML1256AKILFT is a clock multiplexer and buffer designed for PCIe Gen1–7 applications. It features a 2:12 ratio with differential HCSL inputs and LP-HCSL outputs. The device supports PLL and bypass modes, offering jitter cleaning capabilities. It operates on a 3.3V supply (3.135V to 3.465V) within an industrial temperature range of -40°C to +85°C. Key parameters include a maximum frequency of 400 MHz, typical additive phase jitter of 130 fs RMS, and typical power consumption of 343 mW. It is housed in a 72-VFQFPN package.

Feature Summary

• Supports PCIe Gen1–7 compliant clocking in both PLL and bypass modes
• Features low-noise PLL for jitter cleaning and spread spectrum tolerance
• Provides 12 differential LP-HCSL outputs with Zout = 85Ω, eliminating external termination resistors
• Includes SMBus write protection pin for enhanced system security

Applications

• PCI Express (PCIe) Gen1 through Gen7 systems
• SRIS and SRNS complex clocking architectures
• UPI/QPI support applications

Procurement Notes

Verify the suffix 'KILFT' corresponds to the tape and reel packaging configuration as indicated by distributor listings. Confirm RoHS compliance status via the manufacturer's datasheet before integration. Ensure the ordering quantity aligns with the standard factory pack size of 2500 units typically associated with this suffix variant.

Selection Notes

Select this component when designing for high-speed PCIe interfaces requiring jitter attenuation. The integrated LP-HCSL outputs simplify board layout by removing the need for 48 discrete termination resistors. Verify that the input signal meets the HCSL specification and that the application benefits from the selectable PLL bandwidth or bypass mode options.

Part Context

This part belongs to the 9ZML1256 series, representing a second-generation enhancement of the DB1200ZL derivative. It is distinct from similar models like the 9ZML1252E or 9ZML1253EKILF by its specific combination of PCIe Gen1-7 support, SMBus write lock feature, and LP-HCSL output signaling characteristics.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.