SI5342D-B04144-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5342D-B04144-GMR 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 signals and up to 250 MHz for LVCMOS. It achieves ultra-low jitter of 90 fs rms and operates 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 and MultiSynth technologies.
• Supports hitless input clock switching with automatic or manual selection capabilities.
• Includes in-circuit programmable non-volatile memory for known power-up configuration.
• Features fully integrated on-chip loop filter to eliminate discrete noise coupling risks.

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 ordering suffix against the manufacturer's current documentation to confirm tape and reel packaging requirements. Confirm that the factory preprogrammed configuration matches the target application design. Check for any product change notifications regarding pinout or electrical specifications before finalizing procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a low-pin-count solution with two differential or single-ended outputs is required. Ensure the application frequency plan falls within the 350 MHz maximum output limit defined for the 'D' variant. Verify that the serial interface compatibility and voltage levels align with the system controller.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5345/44/42 Rev D family, which utilizes combined DSPLL and MultiSynth technologies. While the Si5345 offers ten outputs and the Si5344 offers four, the Si5342 provides a compact four-input, two-output configuration. All variants share similar core jitter attenuation and programming architectures.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Si5342A-D-GMR: Offers higher output frequency capability up to 1028 MHz compared to the 350 MHz limit of the Si5342D variant.

Clock Generators, PLLs, Frequency Synthesizers FAQ

What is the maximum output frequency for the Si5342D variant?

The Si5342D variant supports a maximum differential output frequency of 350 MHz and an LVCMOS output frequency of 250 MHz.

How does the device handle input clock loss?

The device monitors inputs for Loss of Signal (LOS) and Out-of-Frequency (OOF). If all valid inputs fail, it enters holdover mode using stored historical data or free-run mode if no history is available.

Is external crystal loading capacitance required?

No, the device includes internal XTAL loading capacitors, eliminating the need for external capacitors on the XA/XB pins.