SI5338C-B11788-GM

Overview

The SI5338C-B11788-GM is a programmable quad clock generator from Skyworks Solutions. It utilizes MultiSynth technology to synthesize 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. It operates from 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. Configuration is performed via an I2C/SMBus interface.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four output drivers with 0 ppm accuracy.
• 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 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 resolution.

Applications

• Ethernet switch/router clocking
• PCIe Gen1/2/3/4 common clock and SRNS
• Processor and FPGA clocking
• Broadcast video/audio timing
• Telecom line cards

Procurement Notes

Verify the specific ordering suffix B11788 against the manufacturer's current datasheet to confirm the programmed factory configuration. Ensure the package type matches the required PCB land pattern for the 24-QFN form factor. Confirm that the I2C pull-up voltage requirements align with the system bus specifications.

Selection Notes

Select this component when multiple independent clock frequencies are required from a single IC. Ensure the target output format (LVDS, LVPECL, etc.) and frequency range are supported by the specific driver configuration. Verify that the input reference source matches one of the supported types, such as differential or single-ended CMOS.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'C' indicates the commercial temperature grade (-40°C to +85°C). The 'B' denotes the package style, and 'GMR' signifies tape and reel packaging. The suffix '11788' represents the specific factory programming data for frequency and output configurations.

Replacement Considerations

Direct replacements within the same family include other Si5338 variants with different programming suffixes if the electrical parameters match. Cross-family alternatives may require verification of pin compatibility and software configuration tools like ClockBuilder Pro.