SI52111-B3-GTR

Overview

The SI52111-B3-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 requires a 3.3 V supply (2.97 V to 3.63 V) and draws 13 mA. It features cycle-to-cycle jitter of 28 ps typical and long-term accuracy of 250 ppm. 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 generation
• Low power HCSL differential output buffer requiring no termination resistors
• Supports 25 MHz crystal or clock input with triangular spread spectrum not supported
• Extended operating temperature range from –40 °C to +85 °C

Applications

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

Procurement Notes

Verify the GTR suffix indicates the 8-pin TSSOP package supplied in tape and reel configuration. Confirm the B3 designation ensures the absence of spread spectrum functionality. Ensure the component meets RoHS6 and lead-free requirements as specified for this ordering code.

Selection Notes

Select the SI52111-B3-GTR when a single differential HCSL output is required for PCIe Gen 1 or Gen 2 interfaces. This part is suitable for designs needing low power consumption without spread spectrum modulation. Verify that the 8-pin TSSOP footprint aligns with the PCB layout constraints.

Part Context

This component belongs to the Si52111-Bx family of PCI-Express Gen 2 single-output clock generators. The 'B3' variant specifically provides non-spread outputs, distinguishing it from the B4 series which includes 0.5% down spread capabilities. It serves as a dedicated timing solution for embedded systems requiring strict PCIe compliance.

Replacement Considerations

The SI52111-B4-GTR is a compatible alternative if spread spectrum functionality is desired. For applications requiring PCIe Gen 3 support, the SI52111-B5-GTR should be considered instead.