SI5338C-B04323-GMR

Overview

The SI5338C-B04323-GMR is a programmable quad clock generator from Skyworks Solutions. It utilizes MultiSynth technology to synthesize any frequency on four independent output drivers with zero ppm precision. 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 features low phase jitter of 0.7 ps RMS typical. Configuration is performed via an I²C/SMBus interface.

Feature Summary

• MultiSynth™ technology enables independent, any-frequency synthesis on four output drivers with 0 ppm accuracy.
• Supports flexible input references: 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 selectable at 1.5, 1.8, 2.5, or 3.3 V.
• Features glitchless frequency adjustments in 1 ppm steps and independent 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.
• Telecom line cards and MSAN/DSLAM/PON applications.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and shipping configuration. Ensure compatibility with the I²C bus voltage levels used in the target system, as the device supports pull-up voltages from 1.71 V to 3.63 V. Confirm that the required output frequencies and signal formats fall within the specified operational ranges for the selected supply voltage.

Selection Notes

Select this component when multiple independent clock frequencies are required from a single IC. Ensure the input reference source matches one of the supported types (crystal, CMOS, or differential). Verify that the target output signal format (LVPECL, LVDS, HCSL, etc.) is compatible with the available output driver supplies. Consider the thermal characteristics if operating at maximum load currents across the full temperature range.

Part Context

This part belongs to the Si5338 family of I²C-programmable any-frequency, any-output quad clock generators. The 'C' designation typically indicates a specific output frequency range or configuration variant within the series, while the '-GMR' suffix denotes a tape-and-reel packaging option suitable for automated surface-mount assembly.

Replacement Considerations

Direct pin-to-pin replacements within the same family include other Si5338 variants such as SI5338A, SI5338Q, or SI5338M, provided their specific frequency and output format capabilities match the design requirements. Verify that the replacement part supports the necessary input reference frequencies and output drive strengths.