SI5338M-B-GM

Overview

The SI5338M-B-GM is a programmable quad clock generator utilizing MultiSynth technology to synthesize any frequency on four independent output drivers. It supports differential and single-ended formats including LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL. The device accepts inputs from external crystals (8–30 MHz), CMOS (up to 200 MHz), or differential sources (up to 710 MHz). Key electrical parameters include a core supply voltage of 1.8 V, 2.5 V, or 3.3 V, a typical operating current of 45 mA, and a maximum output frequency of 710 MHz for differential outputs. It features low phase jitter of 0.7 ps RMS typ and operates within a temperature range of –40 °C to +85 °C in a 24-lead QFN package.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis with zero ppm precision on four outputs.
• Supports flexible input references including external crystals, CMOS, SSTL/HSTL, and differential signals up to 710 MHz.
• Configurable output drivers support various signal formats and independent supply voltages (1.5, 1.8, 2.5, or 3.3 V).
• Includes independent frequency increment/decrement and phase adjustment features for glitchless adjustments.

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm pinout configuration and factory programming settings. Ensure compatibility with I2C/SMBus interface requirements and check for moisture sensitivity levels prior to surface mount assembly.

Selection Notes

Select this component when designing systems requiring independent clock frequencies with low jitter across multiple outputs. Verify that the required output voltage levels match the available VDDO options and ensure the input reference source falls within the supported frequency ranges for the chosen format.

Part Context

This part belongs to the Si5338 family of high-performance clock generators. The 'M' suffix typically denotes a specific factory-programmed configuration variant within the series, distinct from generic unprogrammed versions like the SI5338A-B-GM which supports higher frequency ranges up to 710 MHz on all outputs.

Replacement Considerations

Direct replacements require matching the factory-programmed frequency and format configuration. Generic equivalents such as the SI5338A-B-GM may offer broader frequency capabilities but lack the pre-configured settings unless reprogrammed via I2C.