SI5338A-B11789-GMR

Overview

The SI5338A-B11789-GMR is a programmable quad clock generator utilizing MultiSynth technology. It synthesizes four independent clocks with zero ppm accuracy and low jitter of 0.7 ps RMS typical. The device supports flexible input references including external crystals (8–30 MHz), CMOS, SSTL/HSTL, and differential inputs up to 710 MHz. Outputs support LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL formats across frequencies from 0.16 to 710 MHz. Powered by a single core supply of 1.8, 2.5, or 3.3 V, it operates within –40 to +85 °C in a 24-QFN package.

Feature Summary

• MultiSynth technology enables independent any-frequency synthesis on four output drivers with true zero ppm precision.
• Low phase jitter performance of 0.7 ps RMS typical, compliant with PCIe Gen 1/2/3/4 Common Clock and SRNS standards.
• Highly configurable outputs supporting LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL signal formats.
• Flexible input reference options including external crystal, CMOS, SSTL/HSTL, and differential inputs up to 710 MHz.

Applications

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

Procurement Notes

Verify the specific factory configuration code 'B11789' against the manufacturer's ordering guide to confirm the exact frequency plan and output settings. Confirm that the GMR suffix corresponds to the required tape-and-reel packaging format for automated assembly processes.

Selection Notes

Select this component when designing systems requiring four independent clock signals with precise frequency accuracy and low jitter. Ensure the target application supports the available output voltage levels (1.5, 1.8, 2.5, or 3.3 V) and utilizes the I2C interface for programming via ClockBuilder Pro software.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'A' indicates the high-performance variant capable of frequencies up to 710 MHz. The 'B' denotes the specific factory-programmed configuration, while 'GMR' specifies the reel packaging option.

Replacement Considerations

Direct replacements within the same family include other Si5338 variants with different factory codes (e.g., SI5338A-Bxxxxx-GMR). Verify that substitute parts match the required output frequencies, signal formats, and jitter specifications before integration.