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48-Channel Digital I/O BoardFor IBM PC and Compatibles

Item# CIO-DIO48


48-Channel Digital I/O BoardFor IBM PC and Compatibles CIO-DIO48 CIO-DIO48
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  • 48 TTL Digital I/O Lines
  • Single 50-Pin Connector Carries All 48 Digital Lines plus Power
5 Year Warranty

Product Specs

  • Maximum Ambient Temperature 70 {C} (159 {F})
  • Current Drive CIO-DIO48 (source or sink): 2.5 mA CIO-DIO48H (source): 15 mA (sink): 64 mA
  • Minimum Ambient Temperature -20 {C} (-4 {F})
  • Maximum Storage Temperature 70 {C} (159 {F})
  • Minimum Storage Temperature -20 {C} (-4 {F})
  • TTL Input High 2.0 V min
  • TTL Input Low -0.5 V min
  • TTL Output High 3.0 V min @ -2.5 mA

The CIO-DIO48 can control 48 devices or sense 48 contact closures from a single half-size card in a PC. The CIO-DIO48 employs two 8255 parallel peripheral interface chips which are programmable in three modes simple byte input or output or strobed I/O. The 8255 is simple to program. The CIO-DIO48 can provide 2.5 mA to activate other chips, but not enough for LED’s or relays. The CIO-DIO48H can source 15 mA or source 64 mA, enough for switching most relays and SSR’s.

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