Industrial Single Board Computer Expansion (SBX) Boards uDX-549 Bit-Programmable Multimodule

uDX-549 Bit-Programmable MultimoduleThe MICRODESIGNS uDX-549 provides 48 bit-programmable lines of buffered TTL-compatible parallel I/O on a single-wide SBX board. Each line is individually software programmable as an input or output, so the user is not required to configure lines in groups of 4 or 8 input/outputs. Each line is terminated with a 1.0 KOhm pull-up resistor, and, when configure as an output, is an open-collector TTL driver capable of sinking 24 milliamperes. The uDX-549's two 50-pin I/O connectors are compatible with OPTO-22-type industrial interface racks and modules. To ease software programming, previously written output values can be read back. The uDX-549 improves on competitive SBX modules by offering twice as many parallel lines, I/O direction bit-programmability, and high current TTL buffering while retaining a single-wide SBX board form factor.