SI5342D-B03329-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5342D-B03329-GM is a jitter attenuator and clock multiplier from the Si5342 Rev D family, manufactured by Skyworks Solutions. It features four inputs and two outputs housed in a 44-QFN (7x7 mm) package. The device supports differential input frequencies from 8 kHz to 750 MHz and LVCMOS inputs up to 250 MHz. Output frequencies range from 100 Hz to 350 MHz for differential formats and up to 250 MHz for LVCMOS. It operates on a core voltage of 1.8 V ±5% and output supplies of 3.3 V, 2.5 V, or 1.8 V. The component functions within a temperature range of –40 °C to +85 °C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using fourth-generation DSPLL technology.
• Provides ultra-low jitter performance with an integrated loop filter to eliminate discrete noise coupling risks.
• Supports free-run, synchronous, and holdover modes with automatic or manual hitless input clock switching.

Clock Generators, PLLs, Frequency Synthesizers Applications

• OTN muxponders and transponders
• 10/40/100 G networking line cards
• GbE/10 GbE/100 GbE Synchronous Ethernet (ITU-T G.8262)
• Carrier Ethernet switches
• SONET/SDH line cards

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific factory preprogrammed configuration associated with the B03329 suffix against the official datasheet ordering guide. Confirm that the required serial interface protocol (I2C or SPI) matches the system design. Ensure the external crystal specifications align with the recommended 48 MHz to 54 MHz range for optimal jitter performance.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when two low-jitter outputs are sufficient for the application. The 'D' suffix indicates a maximum output frequency of 350 MHz; choose the 'A' variant if frequencies up to 1028 MHz are required. Verify that the 44-QFN package dimensions fit the PCB land pattern constraints and that the thermal dissipation requirements are met within the specified operating temperature range.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5342 Rev D series, which utilizes MultiSynth technology for flexible clock generation. Unlike the Si5345 (10 outputs) or Si5344 (4 outputs), the Si5342 provides exactly two outputs. The part number structure follows the standard Skyworks convention where the alphanumeric sequence denotes a unique factory preprogrammed configuration.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

SI5342A-D-GM: Offers higher output frequency capability up to 1028 MHz compared to the 350 MHz limit of the SI5342D variant. Both share the same 44-QFN package and pinout.