SI5338C-B04443-GMR

Overview

The SI5338C-B04443-GMR is a programmable quad clock generator from Skyworks Solutions, utilizing MultiSynth technology for independent frequency synthesis. It supports four outputs with configurable formats including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL. The device operates on a single core supply of 1.8 V, 2.5 V, or 3.3 V and accepts differential inputs up to 710 MHz. Key electrical parameters include a typical phase jitter of 0.7 ps RMS, a maximum output frequency of 710 MHz for differential signals, and an operating temperature range of -40°C to +85°C.

Feature Summary

• MultiSynth technology enables zero ppm precision and glitchless frequency adjustments in 1 ppm steps.
• Supports flexible input references: external crystals (8-30 MHz), CMOS (5-200 MHz), and differential inputs (up to 710 MHz).
• Configurable output drivers allow independent voltage levels (1.5, 1.8, 2.5, or 3.3 V) and signal formats per driver.
• Integrated I2C/SMBus interface with support for spread spectrum modulation and loss-of-lock alarms.

Applications

• PCIe Gen 1/2/3/4 common clock and SRNS compliant timing.
• Ethernet switch/router and 1 GbE/10 GbE interfaces.
• Processor and FPGA clocking systems.
• Telecom line cards and MSAN/DSLAM/PON equipment.

Procurement Notes

Verify the specific B04443 suffix configuration against the official Skyworks datasheet ordering information table to confirm pinout and functional variants. Confirm package availability and moisture sensitivity level handling requirements prior to assembly.

Selection Notes

Select this component when low jitter (<1 ps RMS) and high flexibility in output formats are required. Ensure the input reference frequency falls within the supported ranges for the chosen output frequencies. Verify that the target application requires the specific output drive strengths and voltage levels provided by the Si5338 family.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. It is designed to replace multiple discrete oscillators, reducing board space and power consumption. The device is housed in a compact 4x4 mm QFN-24 package suitable for dense PCB layouts.

Replacement Considerations

Consult the Skyworks Cross Reference tool for verified substitutes. Direct replacements must match the 24-QFN package, I2C interface, and output format capabilities. Verify thermal characteristics and supply voltage compatibility before substitution.