SI52111-B3-GT

Overview

The SI52111-B3-GT is a single-output PCIe clock generator manufactured by Skyworks Solutions, Inc. It sources one compliant PCIe Gen 1 and Gen 2 differential clock output from a 25 MHz crystal or clock input. The device operates on a 3.3 V supply with a maximum operating current of 13 mA. It features a low power HCSL differential output buffer requiring no termination resistors. The component supports an extended temperature range of –40 to 85 °C and is housed in an 8-pin TSSOP package.

Feature Summary

• PCIe Gen 1 and Gen 2 compliant single-output clock generation
• Low power HCSL differential output buffer without termination resistors
• Supports 25 MHz crystal or clock input
• Extended temperature operation from –40 to 85 °C

Applications

• Network Attached Storage
• Multi-function Printer
• Wireless Access Point
• Routers

Procurement Notes

Verify the specific ordering suffix 'GT' corresponds to the 8-pin TSSOP package configuration as defined in the manufacturer's ordering guide. Confirm that the non-spread spectrum variant aligns with system EMI requirements, as spread spectrum functionality is reserved for the B4 revision. Ensure design compliance with the recommended decoupling capacitor values and PCB layout guidelines provided in the datasheet.

Selection Notes

Select this component when a single differential PCIe clock output is required for Gen 1 or Gen 2 interfaces. The 8-pin TSSOP package is suitable for applications prioritizing surface-mount compatibility over the smaller TDFN footprint. Note that this model does not support triangular spread spectrum; choose the B4 variant if frequency modulation for EMI reduction is necessary.

Part Context

The SI52111-B3-GT belongs to the Si52111-B3/B4 family of high-performance PCIe clock generators. This series is designed for consumer and embedded applications requiring ultra-small footprints and industry-leading low power consumption. The B3 designation specifically indicates the absence of spread spectrum capabilities compared to the B4 counterpart.

Replacement Considerations

The SI52111-B3-GM2 serves as a direct functional substitute offering identical electrical specifications but utilizes a 10-pin TDFN package instead of the 8-pin TSSOP form factor.