SI52111-B4-GT

Overview

The SI52111-B4-GT 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, supporting Serial-ATA at 100 MHz without termination resistors. The device features a triangular spread spectrum profile for EMI reduction and operates on a 3.3 V supply within an extended temperature range of –40 to 85 °C. It is housed in an 8-pin TSSOP package.

Feature Summary

• PCIe Gen 1 and Gen 2 compliant
• Supports 0.5% down spread outputs
• Low power HCSL differential output buffer
• No termination resistors required

Applications

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

Procurement Notes

Verify the specific ordering suffix 'GT' against the manufacturer's current documentation to confirm the 8-pin TSSOP package type and lead-free status. Confirm that the B4 designation correctly aligns with the required 0.5% spread spectrum functionality for the target design.

Selection Notes

Select this component when a single differential PCIe clock output with spread spectrum capability is required. Ensure the application utilizes a 25 MHz crystal or clock input and requires compliance with PCIe Gen 1 or Gen 2 standards. Verify that the 8-pin TSSOP footprint fits the PCB layout constraints.

Part Context

This part belongs to the Si52111-Bx family of single-output PCIe clock generators. The 'B4' variant specifically provides 0.5% down spread capabilities, distinguishing it from the non-spread B3 version. For designs requiring PCIe Gen 3 support, the Si52111-B5/B6 series should be considered instead.

Replacement Considerations

The SI52111-B3-GT serves as a direct substitute if spread spectrum functionality is not required. For applications needing PCIe Gen 3 compliance, the SI52111-B5-GT or SI52111-B6-GT are the appropriate replacements.