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


  • 48 TTL digital I/O lines
  • Emulates mode 0 of 8255 PPI (every port with nibble)
  • Buffered circuits for higher driving capacity than the 8255
  • Interrupt handling capability
  • Timer/Counter interrupt capability
  • Supports both dry and wet contact
  • Keeps the I/O port setting and DO state after system reset
  • BoardID switch
  • Pattern match interrupt function for DI
  • "Change of state" interrupt function for DI
  • Programmable digital filter function for DI


GeneralBus TypeUniversal PCI Express
Dimensions (L x H)168 x 100 mm (6.6" x 3.9")
Humidity (Storage)5 ~ 95 % RH, non-condensing (IEC 68-2-3)
I/O Connectors1 x 68-pin SCSI female connector
Temperature (Operating)0 ~ 60°C (32 ~ 140°F)
Temperature (Storage)-20 ~ 70°C (-4 ~ 158°F)
Isolated Digital InputChannels-
Input Range-
Input Voltage-
Isolated Digital OutputChannels-
Isolation Voltage-
Max. Sink Current-
Output Range-
Max. Input Frequency10 MHz
Resolution32 bits
TTL DI/O Input Channels48 (shared)
Output Channel
Sink Current
24 mA @ 0.4 V
Output Channel
Source Current
15 mA @ 3.76 V
Output Channels48 (shared)
PCIE-1751 is a 48-bit digital I/O card for the PCI Express bus. Its 48 channels are divided into six 8-bit I/O ports and users can configure each 4-channel per port (nibble) as input or output via software. PCIE-1751 also provides three 32-bit counters.

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