SI52111-B4-GTR

Overview

The SI52111-B4-GTR is a single-output PCIe clock generator compliant with Gen 1 and Gen 2 specifications. It sources one differential HCSL output from a 25 MHz crystal or clock input, operating at a maximum frequency of 100 MHz. The device features a triangular spread spectrum profile with a -0.5% down spread range to reduce EMI. It operates on a 3.3 V supply (2.97 V to 3.63 V) with a typical current consumption of 13 mA. Packaged in an 8-pin TSSOP in tape and reel format, it supports an extended temperature range of –40 °C to +85 °C.

Feature Summary

• PCIe Gen 1 and Gen 2 compliant single-output clock generator
• -0.5% triangular spread spectrum for EMI reduction
• Low power HCSL differential output buffer
• Supports 25 MHz crystal or clock input

Applications

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

Procurement Notes

Verify the 'GTR' suffix confirms the 8-pin TSSOP package and tape and reel packaging configuration. Confirm that the B4 designation matches the required -0.5% spread spectrum functionality. Ensure the extended temperature grade (-40 to +85 °C) aligns with system requirements.

Selection Notes

Select this component when PCIe Gen 1 or Gen 2 compliance is required with integrated spread spectrum capabilities. The B4 variant is necessary for EMI reduction; the B3 variant lacks spread spectrum. For higher frequencies like PCIe Gen 3, consider the SI52111-B5/B6 series instead.

Part Context

This part belongs to the Si52111-B3/B4 family of PCI-Express Gen 2 single-output clock generators. The B4 suffix specifically denotes support for 0.5% down spread outputs, distinguishing it from the non-spread B3 models within the same product line.

Replacement Considerations

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