SI5338N-B04992-GMR

Overview

The SI5338N-B04992-GMR is a programmable quad clock generator from Skyworks Solutions. It utilizes MultiSynth technology to synthesize any frequency on four independent output drivers with zero ppm precision. The device supports flexible input references, including external crystals (8–30 MHz), CMOS (up to 200 MHz), and differential inputs (up to 710 MHz). Outputs are configurable for various signal formats such as LVPECL, LVDS, HCSL, and CMOS, with individual 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, features low phase jitter of 0.7 ps RMS typical, and is housed in a compact 4x4 mm QFN-24 package.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four differential output drivers with true zero ppm accuracy.
• Flexible input support includes external crystals (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), and differential inputs (5–710 MHz).
• Configurable outputs support multiple formats: LVPECL/LVDS (0.16–710 MHz), HCSL (0.16–250 MHz), CMOS (0.16–200 MHz), and SSTL/HSTL (0.16–350 MHz).
• Low phase jitter of 0.7 ps RMS typical, compliant with PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS standards.

Applications

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

Procurement Notes

Verify the specific ordering suffix 'B04992' against the manufacturer's official documentation to confirm the exact pre-programmed configuration, as this suffix defines the internal register settings. Ensure compatibility with I2C/SMBus interfaces and check for moisture sensitivity levels if storage conditions exceed specified limits.

Selection Notes

Select this component when designing systems requiring up to four independent clock signals with varying frequencies and voltage levels from a single IC. Consider the 0.7 ps RMS jitter performance for high-speed serial links like PCIe. Verify that the required output formats (LVPECL, LVDS, etc.) and input reference types match the device's capabilities within the -40°C to +85°C operating range.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'N' typically denotes a specific temperature grade or variant within the series, while 'GMR' indicates tape-and-reel packaging. The 'B04992' suffix specifies a factory-programmed configuration, distinguishing it from blank devices that require user programming via ClockBuilder Pro software.

Replacement Considerations

Direct replacements within the same family include other Si5338 variants with different suffixes (e.g., SI5338Q-B-GMR) which share the same pinout and core functionality but may differ in pre-programmed configurations or specific electrical grades. Verify that any substitute supports the required output frequencies and formats.