Overview about the PCI-DIO48 Series of 82C55-based PCI digital boards

The PCI-DIO48 Series of 82C55-based PCI digital boards provide 48 logic-level, bidirectional digital I/O and high current output.

PCI-DIO48 features:

• I/O is organized into two 24-bit groups based on 82C55 mode 0 emulation. Each 24-bit group is divided into three eight-bit ports – ports A, B, and C. Port C can be divided into two four-bit ports – C-HI and C-LO. Each of these ports can be individually programmed as input or output.
• All digital inputs are LSTTL. The output signals are buffered high output drive TTL. The digital output drivers are a 74ABT244 chip that can sink 64 mA and source 15 mA. The input buffers are 74LS373 chips and have standard high input impedance of the 74LS series devices.
• The digital I/O lines are accessible via the 50-pin header connector. The board has a 1-amp rated slow-blow fuse to protect the +5 V User Output on the connector. One spare fuse is provided.
• On power on and reset, all I/O bits are set to input mode. If you are using the board to control items that must be OFF on reset, install a pull-down resistor. If you are using the board to control items that must be OFF on reset, install a pull-down resistor.
• Digital PCI Boards – The PCI-DIO48 series is completely plug-and-play, no jumper or switch setup required. All board addresses are set by the board’s plug-and-play software. Board configuration is controlled by your system’s BIOS.

48 Channel Digital PCI Boards – PCI-DIO48 series includes products:

• PCI-DIO48H
• PCI-DIO48H/SIPSCKT
• PCI-DIO48H-RT
• PCI-DIO48H-RT/SIPSCKT

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