SI5395B-A15654-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5395B-A15654-GMR is a single PLL jitter attenuator from the Si5395 family, utilizing an external crystal reference. It provides 12 outputs with frequencies up to 350 MHz using integer and fractional synthesis modes. The device operates on a core voltage of 1.8 V ±5% and a digital I/O voltage of 3.3 V ±5%. It supports input frequencies from 8 kHz to 750 MHz (differential) or 8 kHz to 250 MHz (LVCMOS). The component is housed in a 64-QFN package measuring 9x9 mm and 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 integer and fractional synthesis.
• Features enhanced hitless switching to minimize output phase transients during clock input changes.
• Supports free-run, synchronous, and holdover modes for robust clock synchronization.
• Includes in-circuit programmable non-volatile memory for persistent configuration storage.

Clock Generators, PLLs, Frequency Synthesizers Applications

• 56G/112G PAM4 SerDes clocking
• OTN muxponders and transponders
• 10/40/100/200/400G networking line cards
• Medical imaging systems

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix 'R' indicates tape and reel packaging rather than tray. Confirm the factory preprogrammed configuration matches the required frequency plan. Ensure the external crystal selection aligns with the 48-54 MHz recommendation for optimal jitter performance. Check RoHS compliance documentation for environmental adherence.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when 12 outputs are required with frequencies capped at 350 MHz. Choose the B-grade variant over A-grade if lower maximum output frequency is acceptable but cost or availability differs. Ensure the design accommodates an external crystal oscillator or resonator, as integrated references are reserved for J/K/L/M/E grades.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5395 family, which combines fourth-generation DSPLL and Multi-Synth technologies. It serves as a high-performance clock multiplier and jitter cleaner. The B-grade designation specifically limits the maximum output frequency to 350 MHz compared to the 1028 MHz limit of the A-grade.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The Si5395A-A15654-GM is a direct functional replacement offering higher output frequencies up to 1028 MHz. For drop-in compatibility with legacy designs, the Si5345 series may be considered, though it lacks the advanced jitter attenuation capabilities of the Si5395.