SI5338A-B01224-GMR

Overview

The SI5338A-B01224-GMR is a programmable quad clock generator utilizing MultiSynth technology. It synthesizes four independent clocks with zero ppm accuracy, supporting frequencies up to 710 MHz. The device features low phase jitter of 0.7 ps RMS typical and accepts flexible inputs including differential (up to 710 MHz), single-ended CMOS (up to 200 MHz), and external crystals (8–30 MHz). Outputs are configurable for LVPECL, LVDS, CML, HCSL, CMOS, SSTL, or HSTL formats with independent supply voltages of 1.5, 1.8, 2.5, or 3.3 V. It operates on a single core supply of 1.8, 2.5, or 3.3 V within a 4x4 mm QFN-24 package.

Feature Summary

• MultiSynth technology enables independent any-frequency synthesis on four output drivers with true zero ppm precision.
• Low phase jitter performance of 0.7 ps RMS typical, compliant with PCIe Gen 1/2/3/4 Common Clock standards.
• Flexible input reference options: external crystal (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), or differential (5–710 MHz).
• Highly configurable outputs support LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL formats with independent voltage levels.

Applications

• PCIe Gen 1/2/3/4 common clock generation
• Ethernet switch/router timing
• Processor and FPGA clocking
• Broadcast video/audio timing
• Telecom line cards

Procurement Notes

Verify the specific ordering suffix B01224 against the manufacturer's current documentation to confirm factory programming parameters. Confirm the GMR suffix indicates tape-and-reel packaging suitable for automated surface-mount assembly. Ensure I2C pull-up voltages align with the system bus requirements, noting that register configuration may be necessary if the bus voltage is below 2.5 V.

Selection Notes

Select this component when multiple independent clock frequencies are required from a single package. Verify that the target output formats (LVPECL, LVDS, etc.) match the load requirements of the destination devices. Check that the input source matches one of the supported types, such as a differential clock or an external crystal. Ensure the operating temperature range of -40 to +85 °C meets the environmental specifications of the application.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'A' designation typically denotes the specific silicon revision or feature set variant within the series. The 'B' suffix often indicates a specific factory-programmed configuration or output driver capability set. The 'GMR' suffix specifies the RoHS-compliant green material and reel packaging format.

Replacement Considerations

Direct pin-to-pin replacements within the same family include other Si5338 variants with different frequency ranges or output configurations, such as the SI5338Q or SI5338P. When substituting, verify that the replacement part supports the required maximum output frequency and output signal formats. Ensure the new part's jitter performance meets the system requirements, as values vary between specific model numbers.