The IP-UD buffered digital I/O IndustryPack provides 24 flexible input/output signal lines with high current output drivers and wide voltage range inputs. Outputs will sink up to 64 mA of continuous load current. Inputs will handle up to +15/–5 V with a 1.25 V logic threshold for direct CMOS/TTL compatibility. Each line may be dynamically and individually configured for either input or output, providing maximum flexibility. Inputs and outputs may be double buffered, making the IndustryPack compatible with simulation systems requiring many inputs and outputs to be latched simultaneously.
Writing a one to any line turns off the output driver, allowing a passive pull up resistor to set the line to a logic high. Writing a zero to any line turns on the driver, driving the line to a logic low. For input use, a one is written to the corresponding line—this is the power up default. For output use, the binary value desired is written to the corresponding line.
Input and output lines may double buffered by providing an external clock. A bit in the Control Register selects the polarity of this clock, allowing inputs and outputs to be latched on either the rising or falling clock edge. Any CMOS/TTL compatible clock source may be used.
The IndustryPack can function in a Master/Slave Mode for synchronizing multiple IndustryPacks. In this mode, the Master IndustryPack redrives the external clock source out I/O line 23. This line becomes the Master Clock, which should be wired to I/O line 24 on the Master and all Slave IndustryPacks.
Reset turns off the open collector output driver and sets disables double buffering for a consistent software interface. Windows NT drivers are available.
Features
- 24 buffered TTL digital I/O lines on a single-wide IndustryPack
- 64 mA +15/-5 V operation
- Each line programmable as input or output
- Double-buffered input and output
- Cascadable external clock triggers double-buffering
Please contact systerra for Ordering Options
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