SI5338M-B05694-GM

Overview

The SI5338M-B05694-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 features low phase jitter of 0.7 ps RMS typical. It accepts flexible input references up to 710 MHz via differential, CMOS, or crystal inputs. Configuration is managed through an I²C/SMBus interface.

Feature Summary

• MultiSynth™ technology enables independent, any-frequency synthesis on four differential output drivers with 0 ppm precision.
• Supports highly configurable output drivers for up to four differential outputs, eight single-ended outputs, or mixed configurations.
• Low phase jitter performance of 0.7 ps RMS typical, compliant with PCIe Gen 1/2/3/4 Common Clock standards.
• Flexible input reference options including external crystals (8–30 MHz), CMOS (5–200 MHz), and differential inputs (5–710 MHz).

Applications

• PCIe Gen 1/2/3/4 systems
• Ethernet switch/router clocking
• Processor and FPGA clocking
• Broadcast video/audio timing
• Telecom line cards

Procurement Notes

Verify the specific factory-programmed parameters associated with the B05694 suffix against the official datasheet ordering information section. Confirm that the QFN-24 package dimensions and thermal characteristics meet the target PCB land pattern requirements. Ensure I2C pull-up voltages are compatible with the selected core supply voltage.

Selection Notes

Select this component when independent frequency synthesis across multiple domains is required without using multiple discrete oscillators. Verify that the desired output frequencies fall within the supported ranges for the chosen signal format (e.g., LVPECL up to 710 MHz, CMOS up to 200 MHz). Check if the glitchless frequency adjustment feature is needed for dynamic system reconfiguration.

Part Context

This part belongs to the Si5338 family of I2C-programmable any-frequency, any-output quad clock generators. It replaces multiple fixed-frequency crystal oscillators in complex digital systems. The 'M' variant typically denotes a specific factory-programmed configuration, while the '-GM' suffix indicates the 24-lead QFN package form factor.

Replacement Considerations

Direct pin-to-pin replacements within the same family include other Si5338 variants such as SI5338A, SI5338B, or SI5338C, provided their factory-programmed frequencies match the design requirements. Cross-family replacement with Si5355 or Si5356 requires verification of output driver compatibility and register mapping differences.