SI5338N-B04337-GMR

Overview

The SI5338N-B04337-GMR is a programmable quad clock generator from Skyworks Solutions. It synthesizes four independent output clocks with zero ppm frequency accuracy using MultiSynth technology. The device supports differential and single-ended outputs, including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL formats. It operates on a single core supply of 1.8 V, 2.5 V, or 3.3 V, with individual output driver supplies configurable to 1.5 V, 1.8 V, 2.5 V, or 3.3 V. Configuration is performed via an I2C/SMBus interface.

Feature Summary

• MultiSynth technology enables any-frequency synthesis with 0 ppm precision on four independent drivers
• Supports flexible input references: external crystals (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), and differential inputs (5–710 MHz)
• Low phase jitter performance of 0.7 ps RMS typical
• Independent glitchless frequency adjustment in 1 ppm steps and phase adjustment with <20 ps resolution

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm pinout assignments and factory programming configurations. Ensure the I2C pull-up voltage aligns with the system bus requirements, as register adjustments may be necessary for voltages below 2.5 V.

Selection Notes

Select this component when multiple distinct clock frequencies are required from a single package. Validate that the target output signal formats (LVPECL, LVDS, HCSL, etc.) match the load requirements. Confirm that the input reference source falls within the supported frequency ranges for the chosen input type.

Part Context

This part belongs to the Si5338 family of high-performance clock generators. The series utilizes patented MultiSynth architecture to replace multiple discrete oscillators. The device is housed in a compact 4 x 4 mm 24-lead QFN package suitable for space-constrained designs.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.