SI5338C-B04870-GMR

Overview

The SI5338C-B04870-GMR is an I2C-programmable quad clock generator from Skyworks Solutions. It utilizes MultiSynth technology to synthesize any frequency on four independent output drivers with 0 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 LVPECL, LVDS, HCSL, CMOS, SSTL, or HSTL formats, with individual supply voltages of 1.5, 1.8, 2.5, or 3.3 V. Key electrical parameters include a core supply voltage range of 1.71–3.63 V, typical operating current of 45 mA, and low phase jitter of 0.7 ps RMS.

Feature Summary

• I2C/SMBus programmable interface with ClockBuilder Pro software support
• Four independent outputs supporting any frequency synthesis up to 710 MHz
• Low phase jitter performance of 0.7 ps RMS typical
• Configurable output drivers for LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL

Applications

• PCIe Gen 1/2/3/4 common clock and SRNS compliance
• Ethernet switch and 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 B04870 against the manufacturer's official datasheet to confirm factory-programmed frequency and format configurations. Ensure compatibility with I2C bus voltage levels (1.71 V to 3.63 V) and check for moisture sensitivity handling requirements during storage and assembly.

Selection Notes

Select this component when replacing multiple crystal oscillators with a single programmable source. Ensure the required output frequencies fall within the supported ranges: LVPECL/LVDS/CML up to 710 MHz, HCSL up to 250 MHz, and CMOS up to 200 MHz. Verify that the input reference signal matches one of the supported types (crystal, CMOS, or differential).

Part Context

This part belongs to the Si5338 family of low-jitter clock generators. It is housed in a 4x4 mm, 24-lead QFN package. The device operates over an extended temperature range of –40 °C to +85 °C and features independent frequency increment/decrement capabilities for glitchless adjustments.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer's cross-reference tools for equivalent devices.