SI5338L-B05947-GMR

Overview

The SI5338L-B05947-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 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 features low phase jitter of 0.7 ps RMS typical. It accepts flexible input references ranging from external crystals (8–30 MHz) to differential inputs up to 710 MHz.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis with true zero ppm accuracy on four outputs.
• Configurable output drivers support LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL formats with independent voltage levels (1.5, 1.8, 2.5, or 3.3 V).
• Low phase jitter performance of 0.7 ps RMS typical, compliant with PCIe Gen 1/2/3/4 Common Clock and SRNS standards.
• Glitchless frequency adjustments via independent increment/decrement features in 1 ppm steps.

Applications

• PCIe Gen 1/2/3/4 systems
• Ethernet switch/router timing
• Processor and FPGA clocking
• Broadcast video/audio timing

Procurement Notes

Verify the specific factory configuration code B05947 against the official Skyworks ordering guide to ensure correct frequency and format settings. Confirm package type is 24-QFN (4x4 mm) and check for moisture sensitivity handling requirements during storage and reflow soldering.

Selection Notes

Select this component when multiple distinct clock frequencies are required from a single IC. Ensure the input reference matches available sources (crystal, CMOS, or differential). Verify that the required output voltage levels and signal formats are supported by the independently configurable drivers.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The suffix 'GMR' indicates tape-and-reel packaging. The 'B05947' code defines the specific factory programming for frequencies and output configurations.

Replacement Considerations

Direct pin-to-pin replacements within the same family include other Si5338 variants with different factory codes. Verify that alternative parts support the same output formats and frequency ranges required by the design.

FAQ

What is the maximum input frequency supported?

The device supports differential inputs up to 710 MHz, while single-ended CMOS inputs are limited to 200 MHz.

Can the outputs operate at different voltages?

Yes, each output driver can be independently configured for 1.5 V, 1.8 V, 2.5 V, or 3.3 V supply levels.

Is spread spectrum modulation supported?

Yes, highly configurable spread spectrum is supported on any output, with frequencies from 5 to 350 MHz and spreads from 0.5% to 5.0%.