SI5338B-B09793-GMR

Overview

The SI5338B-B09793-GMR is an I2C-programmable quad clock generator utilizing MultiSynth technology. It synthesizes 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. Core supply voltage ranges from 1.71 V to 3.63 V (1.8 V, 2.5 V, or 3.3 V). Maximum input frequency reaches 710 MHz via differential inputs. Typical phase jitter is 0.7 ps RMS. Operating temperature spans -40 °C to +85 °C in a 24-lead QFN package.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four output drivers.
• Supports flexible input references: external crystal (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), and differential (5–710 MHz).
• Independent output voltage per driver: 1.5, 1.8, 2.5, or 3.3 V.
• 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 timing.
• Ethernet switch/router clocking.
• Processor and FPGA clocking.
• Broadcast video/audio timing.
• Telecom line cards and MSAN/DSLAM/PON applications.

Procurement Notes

Verify the specific factory programming configuration associated with the B09793 suffix against the system requirements. Confirm that the GMR suffix indicates tape-and-reel packaging suitable for automated assembly. Ensure the I2C pull-up voltage aligns with the selected VDDI2C level, noting register adjustments may be required for voltages below 2.5 V.

Selection Notes

Select this component when designing systems requiring multiple independent clock frequencies from a single source. Verify that the required output signal formats (LVPECL, LVDS, etc.) match the configurable driver capabilities. Check that the input reference frequency falls within the supported ranges for the chosen input type. Ensure power supply constraints meet the 1.8 V, 2.5 V, or 3.3 V core voltage specifications.

Part Context

This part belongs to the Si5338 family of high-performance, low-jitter clock generators. The series replaces discrete oscillators and buffers, simplifying timing architectures. It is designed for applications demanding high frequency flexibility and low power consumption in compact form factors.

Replacement Considerations

Direct replacements must support I2C programmability and similar output configurations. Verify pinout compatibility with the 24-QFN package. Ensure substitute devices offer comparable jitter performance and support the required output voltage levels.