SI5338F-B04077-GMR

Overview

The SI5338F-B04077-GMR is a programmable quad clock generator manufactured by Skyworks Solutions, Inc. It utilizes MultiSynth technology to synthesize any frequency with zero ppm precision on four independent output drivers. The device supports differential and single-ended outputs including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL formats. It operates from a single core supply of 1.8 V, 2.5 V, or 3.3 V and accepts flexible inputs such as external crystals (8–30 MHz), CMOS (up to 200 MHz), or differential signals (up to 710 MHz). Key electrical parameters include a typical RMS jitter of 0.7 ps, a maximum input frequency of 710 MHz, and an operating temperature range of –40 °C to +85 °C.

Feature Summary

• MultiSynth™ Technology: Generates four independent clocks with true zero ppm frequency accuracy.
• Flexible Output Configuration: Supports up to four differential outputs, eight single-ended outputs, or mixed configurations with independent voltage levels (1.5 V, 1.8 V, 2.5 V, 3.3 V).
• Low Jitter Performance: Achieves typical RMS random jitter of 0.7 ps across various output formats.
• Glitchless Frequency Adjustment: Features independent frequency increment/decrement in 1 ppm steps and phase adjustment with <20 ps resolution.

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest documentation to confirm pinout assignments and factory programming settings. Ensure the I2C pull-up voltage compatibility matches the system bus requirements, particularly if operating below 2.5 V. Confirm package integrity for the 24-lead QFN form factor prior to assembly.

Selection Notes

Select this component when designing systems requiring multiple distinct clock frequencies from a single source with high precision. Evaluate the required output signal formats (LVPECL, LVDS, CMOS, etc.) and corresponding supply voltages to ensure driver compatibility. Consider the input reference type (crystal vs. external clock) and verify that the desired output frequencies fall within the supported ranges for the selected format.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. It serves as a replacement for multiple discrete crystal oscillators in complex digital designs. The device integrates synthesis stages and output buffers into a compact 4 x 4 mm QFN package, reducing board space compared to traditional oscillator arrays.

Replacement Considerations

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