SI5338C-B05412-GMR

Overview

The SI5338C-B05412-GMR is a programmable quad clock generator 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 from a 1.8 V, 2.5 V, or 3.3 V core supply with a typical current of 45 mA. Key electrical parameters include a maximum input frequency of 710 MHz, a typical phase jitter of 0.7 ps RMS, and an operating temperature range of –40 °C to +85 °C. It is housed in a 24-lead QFN package.

Feature Summary

• I2C/SMBus programmable interface for flexible configuration
• Independent output voltage support (1.5, 1.8, 2.5, or 3.3 V)
• Glitchless frequency adjustments in 1 ppm steps
• Configurable spread spectrum modulation (0.5% to 5.0%)
• Low phase jitter of 0.7 ps RMS typical

Applications

• PCIe Gen 1/2/3/4 common clock and SRNS
• Ethernet switch/router timing
• FPGA and processor clocking
• Broadcast video/audio timing
• Telecom line cards and MSAN/DSLAM/PON

Procurement Notes

Verify the specific factory programming code associated with the B05412 suffix against the ClockBuilder Pro software database to confirm the exact synthesized frequencies and output configurations. Ensure the I2C pull-up voltage meets the compatibility requirements specified in the datasheet if operating below 2.5 V.

Selection Notes

Select this component when zero ppm frequency accuracy and independent output formatting are required. Validate that the desired output frequencies fall within the supported ranges for the chosen signal format (e.g., up to 710 MHz for LVDS/LVPECL). Confirm thermal management capabilities given the 37 °C/W junction-to-ambient resistance in still air.

Part Context

This part belongs to the Si5338 family of low-jitter clock generators. The 'C' indicates the commercial temperature grade (-40 to +85 °C), while the 'GMR' suffix denotes tape and reel packaging. The specific ordering code includes factory-programmed registers defining the clock synthesis ratios.

Replacement Considerations

Direct pin-compatible replacements within the same family include other Si5338 variants with different factory programming codes. Verify that alternative part numbers support the required output formats and frequencies before substitution.