SI5338B-B11486-GM

Overview

The SI5338B-B11486-GM is a programmable quad clock generator utilizing MultiSynth technology. It synthesizes four independent output clocks with zero ppm precision via an I2C interface. The device supports differential inputs up to 710 MHz and outputs LVPECL, LVDS, CML, HCSL, CMOS, SSTL, or HSTL formats. Key electrical parameters include a core supply voltage of 1.8 V, 2.5 V, or 3.3 V, a typical operating current of 45 mA, and a maximum input frequency of 710 MHz. It operates within a temperature range of -40°C to +85°C in a 24-lead QFN package.

Feature Summary

• MultiSynth technology enables any-frequency synthesis on four differential output drivers with 0 ppm accuracy.
• Supports PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS compliance.
• Flexible input reference options including external crystals (8–30 MHz), CMOS (5–200 MHz), and differential signals (up to 710 MHz).
• Independent output voltage per driver selectable at 1.5, 1.8, 2.5, or 3.3 V.

Applications

• Ethernet switch/router timing
• PCIe Gen1/2/3/4 systems
• Processor and FPGA clocking
• Telecom line cards

Procurement Notes

Verify the specific ordering suffix B11486 against the manufacturer's official documentation to confirm the programmed configuration. Ensure the design accounts for the 24-QFN thermal requirements and moisture sensitivity levels specified in the datasheet.

Selection Notes

Select this component when low jitter (< 0.7 ps RMS) and high precision are required for multiple clock domains. Verify that the target application frequencies fall within the supported ranges for the desired output format, such as LVPECL/LVDS up to 710 MHz or CMOS up to 200 MHz.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'B' designation typically indicates a specific frequency and output configuration variant within the series, distinct from other suffixes like 'A' or 'Q'.

Replacement Considerations

Consult the Skyworks Solutions compatibility matrix for verified substitutes. Direct pin-to-pin replacements may require reprogramming via ClockBuilder Pro software to match the original frequency plan.