SI5348B-B06338-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5348B-B06338-GM is a network synchronizer and jitter attenuator from Skyworks Solutions. It integrates three independent DSPLLs in a 64-lead QFN package. The device supports differential output frequencies from 1 PPS to 718.5 MHz and LVCMOS outputs up to 250 MHz. Input ranges include external crystals (48–54 MHz), REF clocks (5–250 MHz), differential clocks (8 kHz–750 MHz), and LVCMOS clocks (8 kHz–250 MHz). Core voltage is 1.8 V ±5%, with independent output supplies of 3.3 V, 2.5 V, or 1.8 V. Operating temperature range is –40 to +85 °C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Three independent DSPLLs supporting flexible SyncE/IEEE 1588 and SETS architectures
• Ultra-low jitter performance of 100 fs typical
• Digitally controlled oscillator (DCO) mode for precise timing adjustment
• Programmable jitter attenuation bandwidth per DSPLL

Clock Generators, PLLs, Frequency Synthesizers Applications

• Synchronous Ethernet (SyncE) ITU-T G.8262 EEC Option 1 & 2
• Telecom Boundary Clock (T-BC) as defined by ITU-T G.8273.2
• IEEE 1588 (PTP) slave clock synchronization
• Stratum 3/3E, G.812, G.813 network synchronization

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure correct configuration and availability status. Confirm that the pre-programmed sequence ID matches the required frequency plan. Check for any recent product change notifications or end-of-life notices associated with this part number before finalizing procurement plans.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when ultra-low jitter and high flexibility are required for network synchronization. Ensure the design accommodates the necessary external crystal and reference clock inputs. Verify that the output driver types match the system requirements. Use ClockBuilder Pro software to generate the unique numerical sequence ID for the factory pre-programmed configuration.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5348 family of network synchronizers. It is designed for telecom boundary clocks and slave clocks based on network synchronization standards. The device combines small footprint with low power consumption. It supports both traditional and packet-based network synchronization applications.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Consult the official ordering guide for compatible alternatives within the Si5348 family. Verify pinout and electrical specifications before substitution. Ensure the replacement part supports the required output frequency range and jitter performance.