MX852BB0030

Overview

The MX852BB0030 is a ClockWorks® FUSION clock management IC integrating a quartz crystal, synthesizer, and fanout buffers in a single 38-pin 5 mm x 7 mm LGA package. It generates five 156.25 MHz HCSL outputs with ±50 ppm total stability. The device operates from a 2.5V or 3.3V supply (2.375V to 3.465V). Typical phase noise is 73 fs (1.875 MHz–20 MHz) and 162 fs (12 kHz–20 MHz). Period jitter is 1.65 ps peak-to-peak (100 Hz–40 MHz). Operating temperature range is –40°C to +85°C.

Feature Summary

• Integrates quartz crystal, PLL synthesizer, and five HCSL fanout buffers
• Generates five 156.25 MHz differential HCSL outputs
• Typical phase noise of 162 fs (12 kHz to 20 MHz integration range)
• ±50 ppm total frequency stability over temperature

Applications

• 10/40/100 Gigabit Ethernet systems
• Fibre Channel 10G/12G SERDES interfaces

Procurement Notes

Verify the specific media type suffix when ordering. The base part number corresponds to tube packaging (43 units per tube). A tape and reel option exists with the -TR suffix (1,000 units per reel). Confirm availability through authorized Microchip representatives as distribution status varies by region.

Selection Notes

Select this component for designs requiring integrated low-jitter clocking without external crystals. Ensure power supply decoupling follows the recommended filtering guidelines using ferrite beads or Ripple Block filters. Verify that the PCB land pattern matches the 38-lead LGA outline and that the exposed pad connects to the ground plane.

Part Context

This device belongs to the Microchip ClockWorks® FUSION family. It consolidates the entire clock chain into one package to minimize board space and reduce crosstalk. The design replaces discrete oscillator and buffer solutions with a unified synthesizer module.

Replacement Considerations

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

FAQ

How many output clocks does the MX852BB0030 generate?

It generates five 156.25 MHz HCSL output clocks distributed across two banks.

What is the typical period jitter specification?

The typical period jitter is 1.65 ps peak-to-peak measured between 100 Hz and 40 MHz.

Can the outputs be disabled individually?

Yes, Bank 1 and Bank 2 outputs can be tri-stated independently using the OE1 and OE2 LVCMOS input pins.