Specifications:

• Digital I/O:
  24 bit digital I/O lines (1 group)
  Group emulates a 8225 PPI mode 0
  Buffered circuits for higher driving
  capacity than 8255
  Output status read back
  Pin-compatible with OPTO-22 I/O
  module racks
  Transfer rate: 300 KB/sec. (typical)
  Digital output: Logic level 0: 0.5 V max. @
  24 mA sink
  Logic level 1: 2.0 V min. @ 15 mA source
  Digital input: Logic level 0: 0.8 V max.
  Logic level 1: 2.0 V min.
  
• Connector:
  50-pin box header for I/O port
  
• Power Requirements: single +5V @
  600 mA
  
• Dimensions: 90 (L) x 96 (W) mm.
  
• Weight: 100 g
  
• Operating Temperature:
  0 ~ +55 °C