SI5338N-B04908-GM

Overview

The SI5338N-B04908-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 frequency reaches 710 MHz via differential inputs, while outputs support up to 710 MHz for LVDS/LVPECL/CML. Core supply voltage ranges from 1.71 V to 3.63 V (1.8 V, 2.5 V, or 3.3 V). Typical operating current is 45 mA. Phase jitter is typically 0.7 ps RMS. The component is housed in a 24-lead QFN package.

Feature Summary

• MultiSynth technology enables any-frequency synthesis with 0 ppm precision on four independent outputs
• Flexible output drivers supporting LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL formats
• Low phase jitter of 0.7 ps RMS typical
• I2C/SMBus compatible serial interface for configuration

Applications

• PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS compliant systems
• Ethernet switch/router timing
• Processor and FPGA clocking
• Broadcast video/audio timing
• Telecom line cards

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm pinout assignments and factory programming configurations. Ensure compatibility with I2C bus voltage levels by checking register settings if the bus voltage is below 2.5 V. Confirm thermal management requirements based on the QFN-24 package characteristics and expected load conditions.

Selection Notes

Select this component when multiple independent clock frequencies are required from a single source. Verify that the desired output signal formats (LVDS, LVPECL, etc.) match the available driver capabilities. Ensure the input reference frequency falls within the supported range of 5 MHz to 710 MHz depending on the input type. Check power supply constraints to ensure the 1.8 V, 2.5 V, or 3.3 V core supply is available.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'N' suffix typically denotes specific pinout or functional variations within the family, such as output enable control methods. The '-GM' suffix indicates tape and reel packaging. Other variants like SI5338Q or SI5338G may offer different feature sets or output configurations.

Replacement Considerations

Direct replacements within the Si5338 family include SI5338Q-B-GMR or SI5338G-A-GM, provided the pinout and specific output configurations match the design requirements. Verify that the substitute part supports the necessary output formats and jitter specifications for the application.