SI5338H-B04835-GM

Overview

The SI5338H-B04835-GM is a programmable quad clock generator utilizing MultiSynth technology. It synthesizes any frequency on four independent outputs with zero ppm precision. The device supports differential and single-ended formats including LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL. Maximum output frequencies reach 710 MHz for differential signals and 200 MHz for CMOS. It operates from a 1.8 V, 2.5 V, or 3.3 V core supply with a typical current of 45 mA. Jitter performance is characterized by 0.7 ps RMS random jitter. Configuration is managed via an I2C/SMBus interface.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four output drivers with 0 ppm accuracy.
• 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 LVPECL/LVDS/CML up to 710 MHz, HCSL up to 250 MHz, and CMOS up to 200 MHz.
• Features glitchless frequency adjustments in 1 ppm steps and independent phase adjustment with <20 ps resolution.

Applications

• PCIe Gen 1/2/3/4 common clock and SRNS compliant timing
• Ethernet switch/router clocking
• Processor and FPGA clock generation
• Broadcast video/audio timing systems

Procurement Notes

Verify the specific ordering suffix B04835 against official Skyworks documentation to confirm factory-programmed frequency and format configurations. Confirm package availability and moisture sensitivity level handling requirements during assembly. Ensure I2C pull-up voltages match the system bus specifications for reliable communication.

Selection Notes

Select this component when independent frequency synthesis across four outputs is required without crystal constraints. Verify that the target output voltage levels (1.5 V, 1.8 V, 2.5 V, or 3.3 V) are supported by the load. Check if the application requires spread spectrum modulation or specific jitter budgets compatible with the device's 0.7 ps RMS capability.

Part Context

This part belongs to the Si5338 family of high-performance clock generators. It replaces multiple discrete oscillators in complex digital systems. The device integrates PLL and MultiSynth stages within a compact 4x4 mm QFN-24 package. It is designed for applications demanding low power consumption and high flexibility in clock distribution networks.

Replacement Considerations

Direct pin-to-pin replacements within the Si5338 family may require reconfiguration via ClockBuilder Pro software. Verify that alternative SKUs support the same output formats and frequency ranges. Ensure thermal characteristics and operating temperature ranges (-40 to +85 °C) remain consistent for the target environment.