SI5345D-B04495-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345D-B04495-GMR is a clock synthesizer and jitter cleaner from Skyworks Solutions, utilizing fourth-generation DSPLL and MultiSynth technologies. It features four inputs and ten outputs within a 64-QFN 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 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 unit 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 fractional synthesis.
• Provides ultra-low jitter performance with digitally programmable attenuation bandwidth.
• Supports hitless input clock switching between fractionally related sources.
• Includes in-circuit programmable non-volatile memory for persistent 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 and factory pre-programming status. Ensure the part number matches the exact Rev D silicon revision required for your design. Cross-reference the unique numerical sequence in the model name with official Skyworks databases to validate the pre-defined frequency configuration.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when designing systems requiring ten independent low-jitter outputs derived from multiple input sources. The Si5345D variant specifically targets applications where output frequencies do not exceed 350 MHz. Verify that the required input signal formats, such as differential or LVCMOS, align with the device's supported input ranges and termination requirements.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This device belongs to the Si5345 family of jitter attenuators and clock multipliers. It shares architectural similarities with the Si5344 and Si5342 models but distinguishes itself by offering ten output channels compared to four or two in other variants. All members utilize the same 64-QFN package and core technology stack.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Si5345B-D-GMR provides similar functionality with a lower maximum output frequency limit. Si5345A-D-GM offers higher frequency support up to 1028 MHz. Si5344D-D-GMR serves as a pin-compatible alternative if only four outputs are required.