SI52111-B5-GTR

Overview

The SI52111-B5-GTR is a single-output PCIe clock generator manufactured by Skyworks Solutions, Inc. It sources one PCIe clock output from a 25 MHz crystal or clock input, supporting Gen 1 through Gen 4 common clock specifications and Gen 3 SRNS. 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 at 100 MHz without requiring termination resistors. The component is housed in an 8-pin TSSOP package and supports an extended operating temperature range from -40 °C to +85 °C.

Feature Summary

• PCIe Gen 1, Gen 2, Gen 3, Gen 3 SRNS, and Gen 4 common clock compliant
• Low power HCSL differential output buffer (100 MHz)
• Supports Serial-ATA (SATA) at 100 MHz
• No termination resistors required for the output buffer

Applications

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

Procurement Notes

Verify that the specific B5 suffix corresponds to the non-spread spectrum variant, as the B6 variant supports 0.5% down spread. Confirm the GTR suffix indicates the 8-pin TSSOP tape and reel packaging format. Ensure the design accommodates the extended temperature rating (-40 to +85 °C). Cross-reference the datasheet revision date against manufacturing dates to account for potential documentation updates.

Selection Notes

Select this part when a single PCIe clock output is required for consumer or embedded applications. The B5 variant is appropriate if spread spectrum functionality is not needed. Compare against the B6 variant if EMI reduction via triangular spread spectrum is a priority. Consider the 8-pin TSSOP package dimensions if board space constraints differ from the 10-pin TDFN alternative.

Part Context

This component belongs to the Si52111-B5/B6 family of PCI-Express Gen 3 single-output clock generators. The 'B5' designation specifically identifies the non-spread spectrum version within the series. The 'GTR' ordering suffix denotes the 8-pin TSSOP package type supplied in tape and reel format for automated assembly processes.

Replacement Considerations

Public confirmed substitute part numbers: SI52111-B5-GM2, SI52111-B5-GT.