SI5338A-B08985-GM

Overview

The SI5338A-B08985-GM is a programmable quad clock generator utilizing MultiSynth technology to synthesize any frequency with zero ppm precision 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 typical RMS jitter of 0.7 ps, and an operating temperature range of -40 °C to +85 °C.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four output drivers with true zero ppm accuracy.
• Flexible input reference options including external crystals (8-30 MHz), CMOS (5-200 MHz), and differential inputs (up to 710 MHz).
• Independent output voltage configuration per driver supporting 1.5 V, 1.8 V, 2.5 V, or 3.3 V levels.
• Glitchless frequency adjustments via independent increment/decrement features in 1 ppm steps.

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 pin assignments and factory programming configurations. Ensure compatibility with I2C/SMBus interface requirements for system integration.

Selection Notes

Select this component when low phase jitter (0.7 ps typ) and flexible output format support are required. Confirm that the desired output frequencies fall within the supported ranges for the selected signal format, such as up to 710 MHz for LVDS/LVPECL or 200 MHz for CMOS.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. It replaces multiple discrete crystal oscillators by providing four independent clock outputs from a single package, reducing board space and design complexity.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.

FAQ

What is the maximum input frequency supported by the Si5338?

The device supports a maximum differential input frequency of 710 MHz.

Can the output drivers operate at different supply voltages?

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

Is the device compatible with PCIe standards?

Yes, it is compliant with PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS specifications.