SI5338C-B05574-GMR

Overview

The SI5338C-B05574-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 from 1.5 V to 3.3 V. Maximum input frequency reaches 710 MHz via differential inputs, while maximum output frequencies vary by format, up to 710 MHz for LVDS/LVPECL. Typical phase jitter is 0.7 ps RMS.

Feature Summary

• MultiSynth™ technology enables independent, any-frequency synthesis on four output drivers with 0 ppm precision.
• Flexible input reference options include external crystals (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), and differential inputs (5–710 MHz).
• Independent output voltage per driver supports 1.5, 1.8, 2.5, or 3.3 V configurations.
• Glitchless frequency adjustments are enabled via independent frequency increment/decrement features 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 ordering suffix against the manufacturer's current documentation to confirm factory programming parameters. The 'GMR' suffix indicates tape-and-reel packaging. Confirm that the I2C pull-up voltage requirements align with the system design, particularly if operating below 2.5 V.

Selection Notes

Select this component when multiple distinct clock frequencies are required from a single package. Ensure the target output signal format (LVDS, LVPECL, CMOS, etc.) matches the load requirements. Verify that the input source meets the specified frequency range for the chosen interface type.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. It replaces discrete crystal oscillators and frequency translators. The device integrates a PLL and MultiSynth dividers within a 4x4 mm QFN-24 package.

Replacement Considerations

Direct pin-to-pin replacements within the same family require identical electrical characteristics and pinout compatibility. Verify that alternative part numbers support the same output formats and frequency ranges required by the application.