SI5338J-B04777-GM

Overview

The Skyworks SI5338J-B04777-GM is a programmable quad clock generator 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 from a 1.8 V, 2.5 V, or 3.3 V core supply with a typical current of 45 mA. It features low phase jitter of 0.7 ps RMS, zero ppm frequency accuracy, and flexible input references up to 710 MHz. Packaged in a 4x4 mm QFN-24, it allows independent voltage selection per driver.

Feature Summary

• MultiSynth™ technology enables independent, any-frequency synthesis on four output drivers with 0 ppm precision.
• Supports PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS compliance.
• Flexible inputs include external crystals (8–30 MHz), CMOS (5–200 MHz), and differential signals (up to 710 MHz).
• Independent output voltage configuration per driver: 1.5, 1.8, 2.5, or 3.3 V.

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm pinout assignments and factory programming configurations. Ensure compatibility with I2C/SMBus interface requirements for system integration.

Selection Notes

Select this component when designing systems requiring multiple independent clock frequencies from a single package. Verify that the required output signal formats (LVPECL, LVDS, etc.) and voltage levels are supported by the specific output driver configurations available in the datasheet.

Part Context

This part belongs to the Si5338 family of high-performance, low-jitter clock generators. The family shares common architectural features such as the MultiSynth PLL and I2C programmability, differentiated primarily by factory-programmed frequency tables and output configurations.

Replacement Considerations

Consult the official Skyworks Solutions replacement guide for verified cross-reference part numbers. Substitutions must match the specific electrical parameters and pinout configuration defined in the datasheet.

FAQ

What is the maximum input frequency supported by the Si5338?

The device supports differential input frequencies up to 710 MHz.

Can the output voltages be configured independently?

Yes, each of the four output drivers can be independently configured to operate at 1.5, 1.8, 2.5, or 3.3 V.

Is the device compliant with PCIe standards?

Yes, it is compliant with PCIe Gen 1/2/3/4 Common Clock and Gen 3 Separate Reference No Spread (SRNS) specifications.