SI5338B-B04327-GM

Overview

The SI5338B-B04327-GM is a programmable quad clock generator utilizing MultiSynth technology. It synthesizes any frequency on four independent output drivers with zero ppm accuracy. The device supports differential and single-ended outputs including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL. Maximum input frequency reaches 710 MHz via differential inputs. Output frequencies range from 0.16 to 710 MHz depending on the format. It operates on a single core supply of 1.8 V, 2.5 V, or 3.3 V with typical current consumption of 45 mA. Jitter performance is specified at 0.7 ps RMS typical.

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), and differential (5-710 MHz)
• Configurable output formats include LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL
• Low phase jitter of 0.7 ps RMS typical with glitchless frequency adjustments

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-programmed configuration associated with the B04327 suffix against the design requirements. Confirm that the QFN-24 package dimensions and thermal characteristics meet the PCB layout constraints. Ensure I2C pull-up voltages are compatible with the system bus levels.

Selection Notes

Select this component when four independent clock signals with varying frequencies or formats are required from a single source. Verify that the desired output voltage levels (1.5 V, 1.8 V, 2.5 V, or 3.3 V) match the load requirements. Check if the specific frequency plan requires PLL bypass mode or standard synthesis operation.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'B' in the model number typically denotes a specific factory-programmed configuration variant within the series. The device replaces multiple discrete oscillators, reducing board space and power consumption in high-performance digital systems.

Replacement Considerations

Direct pin-to-pin replacements within the same family require identical factory programming configurations. Verify that alternative SKUs support the exact same output frequencies and formats. Software reprogramming may be necessary if substituting with a generic unprogrammed variant.