PMC423 Serial I/O Mezzanine

16-port serial, front and rear I/O

PMC423 Serial I/O Mezzanine

This product entered a Restricted Production Phase (RPP) on January 27, 2020

Please refer to downloads section below if you require documentation or software. If you have any questions or require product support, including help migrating to our latest products, please contact us.
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The PMC423 provides a uniquely effective solution for integrating serial I/O requirements into a VMEbus or CompactPCI system. Implemented on a single PMC card, the PMC423 is fully compatible with current generation VMEbus and CPCI single board computers, as well as any special purpose processor that includes a PMC connector. In addition, card edge PCI systems can be accommodated using our PMC239 adapter for rapid prototype and development.

  • Baud rate from 150bps - 6.25Mbps
  • Read/write burst operation
  • Data transfer in byte, word and double-word
  • 16 ports routed to the front and rear
  • PMC/PCI form factor (66 Mhz capable)
  • 16-port serial controller with two 16-bit timer/counters


Form Factor
Front I/O
Rear I/O


06-2600001 - 68-pin SCSI to DB9 x 16 cable

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