SI5338B-B04183-GM

Overview

The SI5338B-B04183-GM is a programmable quad clock generator from Skyworks Solutions, utilizing MultiSynth technology for independent frequency synthesis on four output drivers. It supports differential and single-ended outputs with configurable formats including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL. The device operates on a single core supply of 1.8 V, 2.5 V, or 3.3 V and accepts flexible input references ranging from external crystals (8–30 MHz) to differential clocks 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 signals, 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 highly-configurable output formats: LVPECL/LVDS/CML (up to 710 MHz), HCSL (up to 250 MHz), and CMOS/SSTL/HSTL.
• Low phase jitter performance with a typical RMS value of 0.7 ps.
• Programmable via I2C/SMBus interface with support for glitchless frequency adjustments and spread spectrum generation.

Applications

• PCIe Gen 1/2/3/4 common clock and SRNS compliant timing
• Ethernet switch/router and 1 GbE/10 GbE interfaces
• Processor and FPGA clocking systems
• Telecom line cards and MSAN/DSLAM/PON equipment

Procurement Notes

Verify the specific factory programming configuration associated with the B04183 suffix against the target design requirements. Confirm that the QFN-24 package land pattern matches the recommended PCB layout in the datasheet. Ensure the I2C pull-up voltage levels are compatible with the system bus before integration.

Selection Notes

Select this component when multiple independent clock frequencies are required from a single package. Validate that the desired output signal formats (LVPECL, LVDS, etc.) fall within the specified frequency limits for each driver. Check that the input reference source meets the amplitude and slew rate requirements for optimal jitter performance.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. It replaces discrete crystal oscillators and buffers, consolidating up to four clock sources into one space-saving 4 x 4 mm QFN package. The device is designed to reduce bill-of-materials count while providing high-precision timing for complex digital systems.

Replacement Considerations

Direct pin-to-pin replacements within the same family include other Si5338 variants with different factory-programmed configurations. Verify that alternative part numbers support the same output formats and frequency ranges required by the application circuit.