SI5338A-B04523-GMR

Overview

The SI5338A-B04523-GMR is a programmable quad clock generator utilizing MultiSynth technology. It synthesizes four independent output clocks with any frequency up to 710 MHz and zero ppm precision. The device features low phase jitter of 0.7 ps RMS typical, supporting LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL formats. It operates on a single core supply of 1.8 V, 2.5 V, or 3.3 V with a typical current of 45 mA. Configuration is managed via an I2C/SMBus interface within a 4x4 mm QFN-24 package.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four differential output drivers with 0 ppm accuracy.
• Low phase jitter performance of 0.7 ps RMS typical for high-speed applications like PCIe Gen 3/4.
• Flexible input reference options including external crystals (8–30 MHz), CMOS (5–200 MHz), and differential inputs (up to 710 MHz).
• Independent output voltage per driver supports 1.5 V, 1.8 V, 2.5 V, or 3.3 V levels.

Applications

• PCIe Gen 1/2/3/4 common clock and SRNS compliant timing.
• Ethernet switch/router and 1 GbE/10 GbE interfaces.
• Processor and FPGA clocking systems.
• Broadcast video/audio timing distribution.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest documentation to confirm factory programming parameters. The 'GMR' suffix indicates tape-and-reel packaging. Confirm that the pre-programmed configuration matches the target application requirements before integration.

Selection Notes

Select this component when four independent clock outputs with varying frequencies and signal formats are required from a single source. Ensure the input reference frequency falls within the supported range for the desired output format. Validate power supply decoupling and thermal dissipation for the QFN-24 package in the final design.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. It replaces multiple discrete crystal oscillators and buffers. The device integrates PLLs and MultiSynth dividers to generate precise clock signals without external components other than a reference crystal or input clock.

Replacement Considerations

Direct pin-compatible replacements within the same family include SI5338A-B-GM and SI5338A-B05923-GM. Verify that the replacement part has the correct factory-programmed frequency and format settings, as these vary by specific part number suffix.