SI5338H-B04521-GM

Overview

The SI5338H-B04521-GM is a programmable quad clock generator from Skyworks Solutions. It utilizes MultiSynth technology to synthesize any frequency on four independent output drivers with zero ppm precision. The device supports differential and single-ended outputs including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL. It operates from a single core supply of 1.8 V, 2.5 V, or 3.3 V and features low phase jitter of 0.7 ps RMS typical. Configuration is performed via an I2C/SMBus interface.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four output drivers
• Supports flexible input references: external crystal (8-30 MHz), CMOS, SSTL/HSTL, and differential inputs up to 710 MHz
• Highly configurable output drivers supporting LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL formats
• Independent frequency increment/decrement feature allows glitchless adjustments in 1 ppm steps

Applications

• Ethernet switch/router
• PCIe Gen1/2/3/4
• Processor and FPGA clocking
• Telecom line cards
• Fibre Channel, SAN

Procurement Notes

Verify the specific factory-programmed NVM configuration associated with the B04521 suffix against design requirements. Confirm that the QFN-24 package dimensions and thermal characteristics align with the PCB land pattern specifications provided in the datasheet.

Selection Notes

Select this component when multiple distinct clock frequencies are required from a single source. Ensure the target output voltage levels (1.5 V, 1.8 V, 2.5 V, or 3.3 V) match the load requirements. Verify that the input reference signal type and frequency range fall within the supported specifications for the desired output format.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'H' designation typically indicates a specific factory-programmed configuration variant within the series. The '-GM' suffix denotes the tape and reel packaging option for surface-mount assembly.

Replacement Considerations

Direct pin-to-pin replacements within the same family include other Si5338 variants such as SI5338N or SI5338Q, provided their factory-programmed configurations meet the system's frequency and format requirements.