48-ch Digital I/O and 3-ch Counter PCI Card

  • 48 TTL digital I/O lines ƒ
  • Emulates mode 0 of 8255 PPI ƒ
  • Buffered circuits for higher driving capacity ƒ
  • Interrupt handling capability ƒ
  • Timer/Counter interrupt capability ƒ
  • Supports both dry and wet contact ƒ
  • Keeps the I/O port setting and DO state after system reset ƒ
  • BoardID switch


PCI-1751 is a 48-bit digital I/O card for the PCI bus. Its 48 bits are divided into six 8-bit I/O ports and users can configure each port as input or output via software. PCI-1751 also provides one event counter and two 16-bit timers, which can be cascaded to become a 32-bit timer.