SI5338M-B04751-GM

Overview

The SI5338M-B04751-GM is a programmable quad clock generator from Skyworks Solutions, utilizing MultiSynth technology to synthesize any frequency on four independent output drivers. It supports differential and single-ended formats including LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL. The device operates with a core supply of 1.8 V, 2.5 V, or 3.3 V and accepts inputs up to 710 MHz. Key electrical parameters include a typical phase jitter of 0.7 ps RMS, a maximum output frequency of 710 MHz for differential outputs, and an operating temperature range of –40 °C to +85 °C.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four output drivers with zero ppm precision.
• Supports flexible input references: external crystals (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), and differential inputs (5–710 MHz).
• Configurable output drivers support various signal formats and independent voltage levels (1.5, 1.8, 2.5, or 3.3 V).
• Features glitchless frequency adjustments in 1 ppm steps and independent phase adjustment with <20 ps accuracy.

Applications

• PCIe Gen 1/2/3/4 common clock and Gen 3 SRNS compliant systems.
• Ethernet switch/router and telecom line card timing.
• Processor and FPGA clocking solutions.
• Broadcast video/audio timing infrastructure.

Procurement Notes

Verify the specific ordering suffix B04751 against the manufacturer's current documentation to confirm factory-programmed register settings. Confirm package type is 24-QFN and check for moisture sensitivity classification requirements during storage and handling.

Selection Notes

Select this component when designing systems requiring multiple independent clock frequencies from a single IC. Ensure the required output format (LVPECL, LVDS, etc.) and frequency range are supported by the specific driver configuration. Verify that the I2C/SMBus interface compatibility matches the system controller.

Part Context

This part belongs to the Si5338 family of high-performance, low-jitter clock generators. The 'B' suffix typically indicates a factory-programmed variant with fixed register settings, while 'GM' denotes the 24-lead QFN package. It replaces discrete crystal oscillators or acts as a frequency translator in complex digital systems.

Replacement Considerations

Consult the official Skyworks replacement guide for verified substitutes. Generic replacements may not match the MultiSynth architecture or specific jitter performance characteristics required for PCIe or high-speed serial applications.