ZL40295LDG6

Overview

The ZL40295LDG6 is a 1-to-20 fanout buffer compliant with PCIe Gen 1 through 5 standards. It provides 20 low-power push-pull HCSL outputs with embedded series termination resistors for 100Ω differential transmission lines. The device supports clock frequencies from 0 to 250MHz and operates on a 3.3V supply. Key electrical characteristics include an ultra-low additive jitter of 10fs for PCIe 5.0 applications and a maximum output-to-output skew of 50ps. It features an embedded LDO voltage regulator for superior power supply noise rejection.

Feature Summary

• Fully compliant with PCIe Gen 1, 2, 3, 4, and 5 standards
• Ultra-low additive jitter performance (10fs for PCIe 5.0)
• 20 Low-Power Push-Pull HCSL outputs with embedded 100Ω termination
• SMBus and Side-Band Interface (SBI) for configuration and control

Applications

• PCI Express generation 1/2/3/4/5 clock distribution
• Intel QPI clock distribution
• Servers and storage systems
• Data centers
• Switches and routers

Procurement Notes

Verify the ordering suffix 'LDG6' corresponds to the 80-pin GQFN package in tray format. Confirm that the specific revision matches the December 2019 datasheet requirements. Ensure compatibility with the -40°C to +85°C industrial temperature range during procurement planning.

Selection Notes

Select this component when designing systems requiring compliance with PCIe Gen 5 specifications while maintaining ultra-low jitter. The embedded termination resistors reduce external component count compared to traditional current-based HCSL buffers. Ensure the design accommodates the 80-pin GQFN footprint and 3.3V power supply constraints.

Part Context

The ZL40295LDG6 belongs to the ZL40295 family of high-performance clock buffers manufactured by Microsemi (now Microchip Technology). This specific part number denotes the tape-and-reel or tray variant depending on the final digit, packaged in a compact 6x6mm GQFN form factor suitable for dense PCB layouts.

Replacement Considerations

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