SI5338C-B04268-GMR

Overview

The SI5338C-B04268-GMR is a programmable clock generator from Skyworks Solutions, utilizing MultiSynth technology to synthesize any frequency on four independent output drivers. It supports core supply voltages of 1.8 V, 2.5 V, or 3.3 V and operates within an ambient temperature range of –40 °C to +85 °C. The device features low phase jitter of 0.7 ps RMS typical, with differential outputs supporting frequencies up to 710 MHz and single-ended CMOS outputs up to 200 MHz. It is housed in a compact 4 x 4 mm QFN-24 package.

Feature Summary

• MultiSynth™ technology enables independent, zero ppm precision synthesis on four output drivers.
• Flexible input reference options including external crystals (8–30 MHz), CMOS (5–200 MHz), and differential inputs (up to 710 MHz).
• Independent output voltage configuration per driver at 1.5 V, 1.8 V, 2.5 V, or 3.3 V.
• Glitchless frequency adjustments via independent increment/decrement feature in 1 ppm steps.

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 B04268 factory code against the manufacturer's current ordering information to confirm the exact pre-programmed frequency and format configuration. As this is a custom programmed part, standard generic datasheets do not list the specific output parameters; consult the associated design file or factory documentation for the precise operational settings.

Selection Notes

Select this component when multiple distinct clock frequencies are required from a single IC. Ensure the target output formats (LVPECL, LVDS, HCSL, CMOS, etc.) match the available driver capabilities. Verify that the required input reference frequency falls within the supported ranges for the chosen input pin configuration.

Part Context

This part belongs to the Si5338 family of I2C-programmable quad clock generators. The 'C' suffix typically denotes specific output drive strength or format limitations compared to other family variants like 'N' or 'Q'. The 'GMR' suffix indicates tape and reel packaging for automated surface-mount assembly.

Replacement Considerations

Direct replacements must be sought from the Si5338 family. Verify that alternative SKUs support the same maximum output frequencies and output signal formats required by the application circuit.