SI5338N-B05174-GM

Overview

The SI5338N-B05174-GM is a programmable quad clock generator from Skyworks Solutions. It synthesizes four independent output clocks with zero ppm frequency accuracy using MultiSynth technology. The device supports differential and single-ended outputs, including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL formats. Maximum input frequencies reach 710 MHz for differential inputs and 200 MHz for single-ended sources. Output frequencies range up to 710 MHz for differential drivers and 200 MHz for CMOS. It operates on a single core supply of 1.8 V, 2.5 V, or 3.3 V, with typical current consumption of 45 mA.

Feature Summary

• MultiSynth technology enables any-frequency synthesis with 0 ppm precision across four independent outputs.
• Flexible output configurations support up to four differential or eight single-ended signals in mixed formats.
• Low phase jitter performance of 0.7 ps RMS typ for GbE and PCIe applications.
• Independent output voltage control (1.5 V, 1.8 V, 2.5 V, or 3.3 V) per driver.

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm factory programming parameters. The part number indicates a pre-programmed unit; ensure the required frequency plan matches the internal configuration. Confirm package type and temperature range specifications align with system requirements before procurement.

Selection Notes

Select this component when multiple distinct clock frequencies are required from a single source. Ensure the desired output signal format (LVPECL, LVDS, etc.) and voltage levels are supported by the specific output pins. Verify that the input reference frequency falls within the supported ranges for the chosen input mode.

Part Context

This device belongs to the Si5338 family of I2C-programmable clock generators. It replaces discrete crystal oscillators and frequency translators. The N suffix typically denotes a specific factory-programmed frequency plan variant within the broader Si5338 product line.

Replacement Considerations

Direct pin-to-pin replacements within the same family include other Si5338 variants with different factory programming codes. Verify that alternative part numbers support the exact same output frequencies and signal formats required by the design.

FAQ

What is the maximum input frequency for differential inputs?

The maximum input frequency for differential inputs on pins IN1/2 and IN5/6 is 710 MHz.

Can the output voltages be configured independently?

Yes, each output driver can be independently powered and configured for 1.5 V, 1.8 V, 2.5 V, or 3.3 V logic levels.

Is spread spectrum modulation supported?

Yes, the device supports configurable spread spectrum on any output, with modulation rates from 33 to 63 kHz and spread amounts from 0.5% to 5.0%.