SI53019-A01AGMR

Overview

The SI53019-A01AGMR is a zero-delay buffer clock distribution component manufactured by Skyworks Solutions Inc. It features a single differential input and nineteen differential HCSL outputs, packaged in a 72-VFQFN (10x10 mm) exposed pad surface-mount device. The device operates on a supply voltage ranging from 3.135 V to 3.465 V with a maximum operating frequency of 133.33 MHz. It includes an integrated Phase-Locked Loop (PLL) for jitter attenuation and supports an industrial temperature range from -40°C to +85°C.

Feature Summary

• Provides zero-delay buffering functionality specifically designed for high-speed serial interface timing requirements.
• Integrates a PLL-based jitter attenuator to clean noisy reference clocks before distribution.
• Delivers signal integrity through nineteen matched differential output channels with controlled slew rates.

Applications

• PCI Express (PCIe) system clock fanout and distribution
• Intel QuickPath Interconnect (QPI) timing networks
• High-performance server and storage controller clock trees

Procurement Notes

Verify the specific suffix 'R' indicates reel packaging configuration distinct from tray variants. Confirm RoHS compliance status via the official datasheet as manufacturing processes may evolve. Check for End-of-Life notices or Product Change Notifications that could affect long-term availability. Ensure the 72-QFN footprint matches the target PCB layout constraints precisely.

Selection Notes

Select this component when a single source clock must drive multiple PCIe or QPI endpoints with minimal skew. The internal PLL is suitable for environments requiring jitter cleaning rather than simple passive buffering. Verify that the HCSL output voltage levels are compatible with the receiving logic inputs across the specified temperature range.

Part Context

This part belongs to the Si53019 family of zero-delay buffers optimized for Intel architecture interfaces. It serves as a critical timing element in complex digital systems where clock synchronization between processors and peripherals is mandatory. The device replaces discrete buffer solutions to reduce board space and improve signal reliability.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult Skyworks Solutions for current portfolio alternatives if this discontinued item is required for new designs.

FAQ

What is the maximum operating frequency of the SI53019-A01AGMR?

The maximum operating frequency is 133.33 MHz.

Does this device include an internal PLL?

Yes, the SI53019-A01AGMR integrates a Phase-Locked Loop for jitter attenuation and clock synthesis.

What type of output signals does this buffer provide?

It provides nineteen differential HCSL (High-Speed Current-Mode Logic) outputs.