SI5342H-C05095-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5342H-C05095-GMR is a jitter attenuator and clock multiplier from the Si5342 family, featuring four inputs and two 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 1028 MHz for differential signals and up to 250 MHz for LVCMOS. The device achieves an ultra-low jitter of 90 fs rms and operates on core voltages of 1.8 V (VDD) and 3.3 V (VDDA). It includes programmable jitter attenuation bandwidths from 0.1 Hz to 4 kHz and supports I2C/SPI serial interfaces with non-volatile memory.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Combines fourth-generation DSPLL and MultiSynth technologies for any-frequency clock generation and jitter attenuation.
• Supports free-run, synchronous, and holdover modes with automatic or manual hitless input clock switching.
• Features fully integrated loop filters and digitally programmable jitter attenuation bandwidth for optimized performance.
• Includes in-circuit programmable non-volatile memory ensuring 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 compatibility with Skyworks ClockBuilder Pro software for configuration. Check for any recent product change notifications regarding pinout or electrical specifications before finalizing procurement plans.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a low-pin-count solution with two differential outputs is required. Verify that the input frequency requirements fall within the 8 kHz to 750 MHz differential range. Confirm that the application can accommodate the 44-QFN 7x7 mm package dimensions and thermal requirements specified in the datasheet.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5342 Rev D family, which offers four inputs and two outputs. It shares architectural similarities with the Si5344 (four outputs) and Si5345 (ten outputs) but provides a more compact footprint suitable for applications requiring fewer output channels while maintaining high-performance jitter attenuation capabilities.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct functional replacements within the same package include other Si5342 variants such as SI5342A-D-GM or SI5342B-D-GM, depending on the required output frequency range and synthesis mode (integer vs. fractional). Verify pin-to-pin compatibility and register map consistency before substitution.

Clock Generators, PLLs, Frequency Synthesizers FAQ

What is the maximum differential output frequency supported by the Si5342?

The Si5342 supports differential output frequencies ranging from 100 Hz up to 1028 MHz.

How does the device handle input clock loss?

The device automatically enters holdover mode if the selected input clock becomes invalid and no other valid inputs are available, using stored historical frequency data to maintain output stability.

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.