SI5344H-D05894-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5344H-D05894-GM is a high-frequency, ultra-low jitter attenuating clock multiplier featuring a Digitally Controlled Oscillator (DCO) and MultiSynth technology. It provides two inputs and four outputs in a QFN-44 package. The device supports High-Frequency Mode up to 2.75 GHz with typical phase jitter of 50 fs-rms (1 MHz–40 MHz). MultiSynth Mode allows any frequency output up to 717.5 MHz with typical jitter under 150 fs-rms (12 kHz–20 MHz). Input frequencies range from 8 kHz to 750 MHz. Core supply voltage is 1.8 V ±5%, while the analog supply is 3.3 V ±5%. Independent output supplies support 1.8 V, 2.5 V, or 3.3 V.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Combines fourth-generation DSPLL with MultiSynth technology for flexible frequency synthesis and ultra-low jitter performance.
• Features DCO control with step resolution as low as 0.001 ppb and capability to lock to gapped clock inputs.
• Includes fully integrated on-chip loop filter to eliminate discrete noise coupling risks.
• Supports hitless input clock switching and automatic free-run/holdover modes.

Clock Generators, PLLs, Frequency Synthesizers Applications

• 100G/200G/400G coherent optical transceivers
• Wireless base-stations

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm factory pre-programming details and packaging type. Confirm availability status through authorized distributors as lead times may vary. Ensure compliance with RoHS-6 standards during procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when designing systems requiring high data rate coherent optical transceiver clocks. Use ClockBuilder Pro software to configure the serial interface and verify that the required output formats (LVDS, LVPECL, LVCMOS, CML, HCSL) match the target application specifications.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5344H/42H Rev D family of high-frequency jitter attenuators. It shares the same core architecture and pinout as other variants within the series, differing primarily in factory programming configurations and specific ordering suffixes.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements include other Si5344H variants with compatible pinouts and electrical characteristics. Verify that alternative parts support the required 2.75 GHz output frequency and DCO functionality if those features are critical to the design.

Clock Generators, PLLs, Frequency Synthesizers FAQ

What is the maximum output frequency supported by the Si5344H?

The device supports a maximum output frequency of 2.75 GHz in High-Frequency Mode.

Can the Si5344H lock to gapped clock inputs?

Yes, the device is designed to lock to gapped clock inputs.

What is the typical phase jitter performance in MultiSynth Mode?

In MultiSynth Mode, the typical phase jitter is less than 150 fs-rms over the 12 kHz to 20 MHz bandwidth.