SI5338A-B05494-GMR

Overview

The SI5338A-B05494-GMR is an I2C-programmable quad clock generator utilizing MultiSynth technology. It synthesizes any frequency on four independent outputs with zero ppm precision and typical phase jitter of 0.7 ps RMS. The device supports a core supply voltage of 1.8 V, 2.5 V, or 3.3 V and operates within a temperature range of –40 to +85 °C. It features flexible input references up to 710 MHz and configurable output drivers supporting LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL formats.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four differential output drivers with 0 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 including external crystals (8–30 MHz), CMOS (5–200 MHz), and differential inputs (up to 710 MHz).
• Independent output voltage per driver (1.5, 1.8, 2.5, or 3.3 V) with glitchless frequency adjustment capabilities.

Applications

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

Procurement Notes

Verify the specific factory configuration code 'B05494' against the manufacturer's current ordering guide, as this suffix denotes a custom pre-programmed frequency plan. Confirm that the GMR suffix corresponds to the required tape-and-reel packaging format for automated assembly processes.

Selection Notes

Select this component when designing systems requiring multiple independent clock frequencies from a single package. Ensure the target application utilizes compatible output voltage levels (LVPECL, LVDS, etc.) and that the input reference signal falls within the supported frequency ranges defined in the electrical specifications.

Part Context

This part belongs to the Si5338 family of high-performance clock generators. The 'A' designation typically indicates the highest performance tier within the series, characterized by the lowest jitter specifications compared to other variants like the Si5338B or C.

Replacement Considerations

Direct pin-to-pin replacements within the same family include the SI5338B and SI5338C models. However, these variants may exhibit higher jitter values and different electrical characteristics. Verify that the alternative part meets the specific jitter requirements of the design before substitution.