SI5338A-B05859-GMR

Overview

The SI5338A-B05859-GMR is an I2C-programmable quad clock generator utilizing MultiSynth technology. It synthesizes any frequency on four independent outputs with zero ppm precision and typical phase jitter of 0.7 ps RMS. The device supports a core supply voltage of 1.8 V, 2.5 V, or 3.3 V and operates within a temperature range of –40 to +85 °C. It accepts differential inputs up to 710 MHz and provides flexible output formats including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL in a 4 x 4 mm QFN-24 package.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four differential output drivers with 0 ppm precision.
• Low phase jitter performance of 0.7 ps RMS typical, compliant with PCIe Gen 1/2/3/4 Common Clock standards.
• Flexible input reference options including external crystals (8–30 MHz), CMOS (5–200 MHz), and differential inputs (5–710 MHz).
• Independent output voltage per driver supporting 1.5, 1.8, 2.5, or 3.3 V for various signal formats.

Applications

• PCIe Gen 1/2/3/4 clocking
• 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 pinout compatibility and factory configuration. Ensure the I2C pull-up voltage matches the system bus requirements, as register adjustments may be necessary for voltages below 2.5 V. Confirm moisture sensitivity level handling during assembly according to JEDEC standards.

Selection Notes

Select this component when low jitter (< 1 ps RMS) and high flexibility are required for multiple clock domains. Ensure the input source supports the desired frequency range, particularly for differential inputs up to 710 MHz. Verify that the target application can accommodate the 4 x 4 mm QFN-24 package dimensions and thermal characteristics.

Part Context

This part belongs to the Si5338 family of programmable clock generators from Skyworks Solutions. It is designed to replace multiple discrete crystal oscillators by providing four independent clock outputs from a single device. The 'B' designation typically indicates a specific factory configuration or variant within the broader Si5338 product line.

Replacement Considerations

Direct replacements include other Si5338 variants such as SI5338A-B-GM or SI5338Q-B-GMR, provided the specific frequency configuration and output format requirements match. Verify that substitute parts support the same input frequencies and output drive strengths.