SI5344D-B04644-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5344D-B04644-GMR is a jitter attenuator and clock multiplier from the Si5344 family, featuring four inputs and four outputs in a 44-QFN package. It 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. The device operates on a core voltage of 1.8 V ±5% and I/O voltages of 3.3 V, 2.5 V, or 1.8 V. It achieves ultra-low jitter performance of 90 fs rms and includes programmable jitter attenuation bandwidths between 0.1 Hz and 4 kHz.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using fourth-generation DSPLL technology.
• Supports hitless input clock switching with automatic or manual selection capabilities.
• Features digitally programmable jitter attenuation bandwidth for optimized application-level performance.
• Includes in-circuit programmable non-volatile memory for known power-up configuration.

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 design specifications before procurement. Check for product change notifications regarding component revisions or supply chain updates.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when four independent output clocks are required within the 350 MHz limit. Ensure the application utilizes differential or compatible single-ended input signals within the specified frequency ranges. Verify that the system environment falls within the -40 to +85 °C operating temperature range.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5344 Rev D series, which integrates MultiSynth and DSPLL technologies. It serves as a low-jitter clock solution for high-speed digital systems requiring precise frequency synthesis and jitter cleaning capabilities across multiple output channels.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The Si5344A-D-GM offers higher frequency support up to 1028 MHz. The Si5344B-D-GM provides similar functionality but may differ in specific factory programming configurations. Verify pin compatibility and electrical specifications before substitution.