SI5338J-B-GM

Overview

The SI5338J-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, HCSL, CMOS, SSTL, and HSTL. The device operates from a 1.8 V, 2.5 V, or 3.3 V core supply with a typical current of 45 mA. Key electrical parameters include a maximum input frequency of 710 MHz, a maximum output frequency of 200 MHz, and a typical phase jitter of 0.7 ps RMS. It features glitchless frequency adjustment in 1 ppm steps and independent phase offset control.

Feature Summary

• Four independent output drivers supporting any frequency synthesis with zero ppm accuracy
• Low phase jitter performance of 0.7 ps RMS typical
• Glitchless frequency increment/decrement capability in 1 ppm steps
• Flexible input references including external crystals (8-30 MHz), CMOS, SSTL/HSTL, and differential inputs

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and tape/reel specifications. Ensure compatibility with I2C/SMBus interface requirements for system integration. Confirm that the selected variant meets the required operating temperature range of -40°C to +85°C for the intended application environment.

Selection Notes

Select this component when designing systems requiring multiple independent clock frequencies from a single IC. The device supports up to four differential outputs, eight single-ended outputs, or a combination. Ensure the target output format (LVPECL, LVDS, HCSL, etc.) matches the load requirements. Verify that the input reference source falls within the supported frequency ranges for the chosen configuration.

Part Context

The SI5338J-B-GM belongs to the Si5338 family of high-performance, low-jitter clock generators. This series replaces discrete crystal oscillators and frequency translators. The 'J' suffix typically denotes specific frequency programming or output configuration variants within the broader Si5338 product line, which shares the same 24-QFN package and core architecture.

Replacement Considerations

Direct replacements within the Si5338 family include SI5338A, SI5338B, SI5338D, SI5338F, and SI5338Q variants. Selection depends on matching the specific output frequency limits and pinout configurations defined in the datasheet. Verify that alternative part numbers support the required output formats and jitter specifications.