SI5338C-B12236-GMR

Overview

The SI5338C-B12236-GMR is a programmable quad clock generator from Skyworks Solutions, utilizing MultiSynth technology to synthesize any frequency on four independent output drivers. It supports differential and single-ended formats including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL. The device accepts flexible input references up to 710 MHz via differential or single-ended pins, or external crystals between 8 and 30 MHz. Key electrical parameters include a core supply voltage range of 1.71 V to 3.63 V, typical operating current of 45 mA, and low phase jitter of 0.7 ps RMS. It operates within an ambient temperature range of –40 °C to +85 °C.

Feature Summary

• MultiSynth technology enables independent, glitchless frequency synthesis with zero ppm accuracy on four outputs.
• Flexible input support for external crystals (8–30 MHz), CMOS (up to 200 MHz), and differential inputs (up to 710 MHz).
• Configurable output drivers supporting LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL formats with independent voltage levels.
• Integrated spread spectrum capability with adjustable deviation (0.5% to 5.0%) and modulation rates.

Applications

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

Procurement Notes

Verify the specific ordering suffix B12236 against the manufacturer's official documentation to confirm the pre-programmed register configuration and output frequencies. Ensure compatibility with I2C/SMBus interface requirements and check for moisture sensitivity handling instructions during storage and assembly.

Selection Notes

Select this component when replacing multiple discrete oscillators with a single programmable source. Confirm that the required output signal formats and frequencies fall within the supported ranges: LVPECL/LVDS up to 710 MHz, HCSL up to 250 MHz, and CMOS up to 200 MHz. Validate power supply constraints against the 1.8 V, 2.5 V, or 3.3 V core options.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. It is designed to replace up to four different frequency crystal oscillators. The device integrates a PLL and MultiSynth dividers to provide high-precision clock synthesis in a compact 4 x 4 mm QFN package.

Replacement Considerations

Direct pin-to-pin replacements within the Si5338 family may require reprogramming if the fixed output frequencies differ. Verify that alternative SKUs support the same output formats and jitter specifications required by the target application.