SI5338C-B05079-GMR

Overview

The SI5338C-B05079-GMR is a programmable quad clock generator from Skyworks Solutions, utilizing MultiSynth technology to synthesize any frequency on four independent output drivers. It supports differential and single-ended formats including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL. The device operates with a core supply of 1.8, 2.5, or 3.3 V and accepts inputs up to 710 MHz. Key electrical parameters include a typical RMS jitter of 0.7 ps, a maximum output frequency of 710 MHz for differential outputs, and an operating temperature range of -40°C to +85°C.

Feature Summary

• MultiSynth™ technology enables zero ppm precision frequency synthesis on four independent outputs.
• Supports flexible input references: external crystals (8-30 MHz), CMOS (5-200 MHz), SSTL/HSTL (5-350 MHz), and differential (5-710 MHz).
• Configurable output drivers support various signal formats and independent supply voltages (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 accuracy.

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 factory configuration encoded in the ordering suffix B05079 against the target design requirements using Skyworks ClockBuilder Pro software. Confirm that the QFN-24 package land pattern matches the recommended PCB layout specifications provided in the datasheet.

Selection Notes

Select this component when independent frequency synthesis across multiple domains is required without external oscillators. Ensure the input reference source matches the supported voltage levels and formats. Validate that the total power consumption remains within thermal limits given the 45 mA typical core current and output load conditions.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'C' indicates a specific factory pre-programmed configuration, while 'GMR' denotes the tape-and-reel packaging format. It replaces discrete crystal oscillators and frequency translators in complex digital systems.

Replacement Considerations

Direct pin-to-pin replacements within the same family require identical factory configurations. Verify compatibility with alternative SKUs such as SI5338Q-B-GMR only if the specific frequency plan and output drive strengths match exactly.