SI5338C-B11301-GMR

Overview

The SI5338C-B11301-GMR is a programmable quad clock generator from Skyworks Solutions, utilizing MultiSynth technology to synthesize any frequency on four independent output drivers. It supports core supply voltages of 1.8 V, 2.5 V, or 3.3 V and operates within an ambient temperature range of –40 °C to +85 °C. The device features low phase jitter of 0.7 ps RMS typical, flexible input references including differential inputs up to 710 MHz, and independently configurable outputs supporting formats such as LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL. Encased in a 4 x 4 mm 24-lead QFN package, it allows for true zero ppm frequency accuracy.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four differential output drivers with 0 ppm precision.
• Flexible input reference options include external crystals (8–30 MHz), CMOS (up to 200 MHz), and differential inputs (up to 710 MHz).
• Independently configurable output drivers support various signal formats (LVPECL, LVDS, HCSL, CMOS, etc.) and supply voltages (1.5, 1.8, 2.5, or 3.3 V).
• 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.

Applications

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

Procurement Notes

Verify the specific ordering suffix B11301 against the manufacturer's official documentation to confirm factory-programmed frequency and format configurations. 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 crystal oscillators with a single programmable source. Confirm that the required output frequencies fall within the supported ranges for the chosen driver format (e.g., LVDS up to 710 MHz, CMOS up to 200 MHz). Verify power supply constraints match the available 1.8 V, 2.5 V, or 3.3 V core voltage options.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'C' indicates commercial temperature grade (-40 to +85 °C), while 'GMR' denotes tape and reel packaging. The alphanumeric suffix specifies the unique factory-programmed register settings for frequency and output configuration.

Replacement Considerations

Direct pin-to-pin replacements within the same family include other Si5338 variants with different programming suffixes. Cross-family replacements require verification of package dimensions, pinout compatibility, and electrical specifications against the original design requirements.

FAQ

What is the maximum input frequency for differential clocks?

The maximum input frequency for AC-coupled differential inputs (pins IN1/2, IN5/6) is 710 MHz.

Can the output drivers operate at different supply voltages?

Yes, each output driver can be independently configured to support supply voltages of 1.5 V, 1.8 V, 2.5 V, or 3.3 V.

Is glitchless frequency adjustment supported?

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