SI5348B-D09733-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5348B-D09733-GMR is a network synchronizer clock featuring three independent DSPLLs in a 64-lead QFN package. It supports differential output frequencies from 1 PPS to 350 MHz and LVCMOS outputs up to 250 MHz. Input ranges include external crystals (48–54 MHz), REF clocks (5–250 MHz), and differential/LVCMOS clocks (8 kHz–750 MHz). The device operates on core voltages of 1.8 V ±5% and 3.3 V ±5%, with an operating temperature range of –40 °C to +85 °C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Three independently configurable DSPLLs supporting SyncE, IEEE 1588, and SETS architectures
• Ultra-low jitter performance of 100 fs typical within the 12 kHz to 20 MHz offset range
• Digitally controlled oscillator mode enabling precise frequency adjustment for PTP applications
• Flexible input selection with manual or automatic switching capabilities

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 confirm factory pre-programmed configuration details. Ensure compatibility with I2C or SPI serial interfaces during integration. Confirm that the tape and reel packaging matches the intended automated assembly process requirements.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when ultra-low jitter and flexible network synchronization are required. Verify that the 350 MHz maximum output frequency meets system needs. Ensure the design accommodates the required external crystal and reference clock inputs for optimal performance.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5348 family of network synchronizers. It shares architectural similarities with other variants like the SI5348A, which supports higher output frequencies up to 718.5 MHz. The B-grade designation indicates a specific frequency range limitation compared to the A-grade counterpart.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Public confirmed substitute: SI5348B-D-GM.