SI5338C-B05323-GMR

Overview

The SI5338C-B05323-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 V, 2.5 V, or 3.3 V and accepts inputs up to 710 MHz. Key electrical parameters include a typical phase jitter of 0.7 ps RMS, a maximum output frequency of 710 MHz for differential outputs, and a maximum input frequency of 710 MHz. It is housed in a 24-lead QFN package.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four output drivers with zero ppm precision.
• Supports flexible input references: external crystals (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), and differential inputs (5–710 MHz).
• Configurable output drivers support various signal formats (LVPECL, LVDS, HCSL, CMOS, etc.) and independent voltage levels (1.5, 1.8, 2.5, or 3.3 V).
• Features glitchless frequency adjustments via independent increment/decrement and spread spectrum capabilities.

Applications

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

Procurement Notes

Verify the specific factory programming configuration associated with the B05323 suffix against the ClockBuilder Pro software or official datasheet ordering information. Confirm that the I2C/SMBus interface requirements match the system bus voltage levels, as the device supports standard and fast modes with pull-up voltages ranging from 1.71 V to 3.63 V.

Selection Notes

Select this component when replacing multiple discrete oscillators with a single low-jitter programmable source. Ensure the required output frequencies fall within the supported ranges for the chosen format (e.g., up to 710 MHz for LVDS/LVPECL). Verify that the input reference source matches one of the supported types, such as a differential clock or an external crystal between 8 and 30 MHz.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'C' typically denotes the commercial temperature grade (-40°C to +85°C), while the 'GMR' indicates a tape-and-reel packaging format suitable for automated surface-mount assembly. The device integrates NVM for storing configurations, allowing for field programming via ClockBuilder Pro.

Replacement Considerations

Direct pin-to-pin replacements within the same family may include other Si5338 variants with different pre-programmed frequencies or temperature grades. When substituting, ensure the new part's output formats and voltage levels match the design requirements, as the internal configuration is fixed by the manufacturer's ordering code.