4.25G 12x12 Crosspoint

The M21353 is a twelve channel device designed to enable the transmission of multi-gigabit serial data through the most challenging environments. The device features twelve independent, programmable equalizers that equalize data at rates up to 4.25 Gbps. Control of the M21353 is provided through an I2C compatible software control interface. The M21353 can also self-configure from an external EEPROM without the need for a host processor. For compatibility with PCI-Express and S-ATA/SAS systems, the M21353 is designed with an electrical idle pass-through function to drive the differential output to the common mode level during OOB signaling. Boundary scan is provided for high-speed input and output pins, and the device is available in a 12x12 mm, 88 pin QFN package.

Product Specifications

Part Number
4.25G 12x12 Crosspoint
Max Data Rate(Gbps)
Number of Channels
Embedded CDR
Power Consumption (W)
Package Size


  • Programmable Equalization for greater than 40" of FR-4 PCB trace at 4.25 Gbps
  • Integrated 12x12 Crosspoint Switch Matrix
  • Extended case temperature range (-20°C to 85°C)
  • 12x12 mm, 88 pin QFN package
  • HW, SW, AND EEPROM programmable
  • Up to 16 dB of input equalization and 6 dB of output de-emphasis
  • Low power dissipation: 110 mW per channel, 1.3 W total power at 1.2V
  • Twelve channel programmable equalizer for data rates up to 4.25 Gbps
  • Supports electrical idle signaling for PCIe and OOB signaling for S-ATA/SAS

Technical Resources

Data Sheet

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Signal Conditioner 12x12 4.25G