SI5338L-B04326-GM

Overview

The SI5338L-B04326-GM is a programmable quad clock generator from Skyworks Solutions, utilizing MultiSynth technology to synthesize any frequency on four independent outputs with zero ppm precision. It operates within a core supply range of 1.71 V to 3.63 V and supports output formats including LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL. The device features low phase jitter of 0.7 ps RMS typical, flexible input references up to 710 MHz, and I2C/SMBus control. Packaged in a 24-lead QFN (4x4 mm), it functions across an ambient temperature range of -40 °C to +85 °C.

Feature Summary

• MultiSynth™ technology enables independent, any-frequency synthesis on four differential output drivers with true zero ppm accuracy.
• Low phase jitter performance of 0.7 ps RMS typical, compliant with PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS standards.
• Flexible input reference options including external crystals (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), and differential inputs (5–710 MHz).
• Independent output voltage per driver (1.5, 1.8, 2.5, or 3.3 V) and configurable spread spectrum modulation on any output.

Applications

• Ethernet switch/router timing
• PCIe Gen1/2/3/4 clocking
• Processor and FPGA clocking
• Broadcast video/audio timing
• Telecom line cards

Procurement Notes

Verify the specific ordering suffix B04326 against the manufacturer's current documentation to confirm factory-programmed frequencies and pin configurations. Ensure compatibility with the required I2C address and output drive strengths for the target application design.

Selection Notes

Select this component when designing systems requiring multiple independent clock frequencies from a single package with low jitter requirements. Confirm that the desired output frequencies fall within the supported ranges for the chosen output format (e.g., LVDS up to 710 MHz, CMOS up to 200 MHz). Validate power supply constraints against the 1.8 V, 2.5 V, or 3.3 V core supply options.

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 component. The 'B' series typically denotes factory-programmed variants, distinguishing it from blank programmable versions.

Replacement Considerations

Direct replacements must match the 24-QFN package and support similar output formats. Verify if alternative Skyworks models like the SI5338A or SI5338B meet the specific frequency and jitter requirements, noting that generic family members may require reprogramming rather than being drop-in functional substitutes.