SI5345D-D15686-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345D-D15686-GMR is a 10-channel, any-frequency jitter attenuator and clock multiplier from Skyworks Solutions Inc. It utilizes fourth-generation DSPLL and MultiSynth technologies to generate output frequencies ranging from 100 Hz to 350 MHz with ultra-low jitter of 90 fs rms. The device features four inputs (differential: 8 kHz–750 MHz; LVCMOS: 8 kHz–250 MHz) and supports LVDS, LVPECL, LVCMOS, CML, and HCSL outputs. It operates on a core voltage of 1.8 V ±5% and an I/O voltage of 3.3 V ±5%, within a temperature range of –40 to +85 °C. The component is housed in a 64-QFN 9×9 mm package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using fractional synthesis.
• Features programmable jitter attenuation bandwidth for optimized performance at the application level.
• Supports hitless input clock switching between fractionally related clocks without phase offset propagation.
• Includes in-circuit programmable non-volatile memory to ensure known frequency configuration upon power-up.

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 status. Ensure the part number matches the exact Rev D specification required for your design. Cross-reference the unique numerical sequence in the part number with factory preprogrammed configurations if applicable. Confirm RoHS compliance and lead times through authorized distributors prior to finalizing procurement plans.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when ultra-low jitter performance below 350 MHz is required alongside flexible input/output signal compatibility. The Si5345D variant specifically targets applications needing integer and fractional synthesis up to 350 MHz. Consider the integrated loop filter and digital programmability for designs requiring reduced board space and noise immunity compared to discrete solutions.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345/44/42 Rev D family of jitter attenuators. The Si5345D distinguishes itself by offering 10 outputs with a maximum frequency of 350 MHz, whereas the Si5345A/C variants support up to 1028 MHz. It shares the same 64-QFN package and core architecture as other Si5345 models but is optimized for lower frequency ranges.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements include SI5345B-D-GM or SI5345C-D-GM depending on whether the 350 MHz or 1028 MHz frequency range is needed. For legacy integration, verify pin-to-pin compatibility with previous revisions of the Si5345 series. Ensure that software configurations generated via ClockBuilder Pro are updated for the specific Rev D characteristics.