SI5338A-B04361-GM

Overview

The SI5338A-B04361-GM is an I2C-programmable quad clock generator utilizing MultiSynth technology. It synthesizes any frequency on four independent outputs with zero ppm precision and 0.7 ps RMS typical jitter. The device supports differential inputs up to 710 MHz and single-ended inputs up to 200 MHz. Outputs are configurable for LVPECL, LVDS, CML, HCSL, CMOS, SSTL, or HSTL formats at supply voltages of 1.5, 1.8, 2.5, or 3.3 V. It operates from a single core supply (1.8, 2.5, or 3.3 V) within a -40 to +85 °C temperature range in a 24-lead QFN package.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four output drivers with true zero ppm accuracy.
• Low phase jitter performance of 0.7 ps RMS typical, compliant with PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS standards.
• Flexible input reference options including external crystals (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), and differential signals (5–710 MHz).
• Independent output voltage per driver (1.5, 1.8, 2.5, or 3.3 V) with glitchless frequency adjustments in 1 ppm steps.

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm pinout compatibility and factory programming parameters. Ensure the design accounts for the 24-QFN thermal requirements and moisture sensitivity levels during assembly.

Selection Notes

Select this component when low jitter (<1 ps RMS) and flexible output format configuration are required. Verify that the desired output frequencies fall within the supported ranges for the chosen signal format (e.g., LVPECL/LVDS up to 710 MHz, CMOS up to 200 MHz). Confirm I2C bus voltage compatibility with the system controller.

Part Context

This part belongs to the Si5338 family of high-performance clock generators. The 'A' designation typically indicates support for higher maximum input/output frequencies compared to other variants in the series. The '-GM' suffix denotes the 24-lead QFN package type.

Replacement Considerations

Direct replacements within the same family include SI5338A-B-GM or SI5338A-Bxxxxx-GM variants. Verify that the substitute part number matches the required output frequencies and signal formats, as these are often factory-programmed.

FAQ

What is the maximum input frequency supported by the SI5338A?

The device supports differential inputs up to 710 MHz and single-ended CMOS inputs up to 200 MHz.

Can the output frequencies be adjusted without glitches?

Yes, the device features an independent frequency increment/decrement capability that allows glitchless frequency adjustments in 1 ppm steps.

What output signal formats are supported?

The outputs support LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL formats, with independent voltage selection per driver.