• 120 Channel high current bi-directional board
• Emulates 8255A PPI mode 0

Block Diagram                  
PIN Assignment                  Circuitry

• No. of channels: 120
  
• Type: Bi-Directional TTL level (positive logic)
  
• I/O interface: Five 8255A mode 0 emulation circuits
  
• I/O signal: LS-TTL non-isolated
  
• Programmable mode: 8255A PPI Mode 0
  
  

• Pull-up resistor: 10K ohms
  
• Logical 0: 0.8V max @ -0.2 mA max (sink)
  
• Logical 1: 2.4V min @ 20.0mA max (source)
  
  OUTPUTS
  
• Logical 0: 0.4mA max @24 mA max (sink)
  
• Logical 1: 2.4V min @ -15µA max (source)
  
  

• Interrupts: C0 & C3 of Port C can generate an interrupt to IRQ 30 & C3 of Port C can generate an interrupt to IRQ 3-7, 9-12, 14 or 15
  
• Enhanced Interrupt: 10 interrupt lines ony use one IRQ
  
• Throughput rate: 200 ns max.
  
• External power: +12 - 24 VDC (±15%)
  
• Isolation voltage: 350 Vrms
  
• I/O address: Any 32-byte boundary
  
• Base address: Dip switch selectable
  
• Default address: 300H to 31FH
  
• Power consumption: +5 VDC 1600mA max.
  
• Connector: x5 50-pin opto-22 compatible connectors
  
• Operating temperature: 0 to 50°C
  
• Relative Humidity: 20 to 90% (no condensation)
  
• Dimensions: 11.7" x 4.8" (298mm x 122mm)

• API-PAC(W32)
  
• ACX-PAC(W32)BP Ver.2.0
  
• DDE-SERVER(W32)
  
• VI-DAQ for LabView
  
• SUPPORT-PAC(PC)601

• 120 fully programmable high current bi-directional TTL level digital I/Os
  
• Enhanced interrupts / use only one IRQ
  
• 350 Vrms voltage isolation
  
• Can sink up to 24mA and output up to 15mA of current per channel
  
• Emulates 8255A PPI mode 0