The Abaco Systems IP-UNIDIG-I is a single-wide Type I IndustryPack module providing 24 individually programmable differential I/O lines for industrial digital I/O applications. Each line operates independently as either input or output, with EIA-422 and EIA-485 compliance and an extended common mode range of +12 V to -7 V. The module features double buffering for both inputs and outputs—critical for simulation systems requiring simultaneous latching of multiple signals—and supports interrupt generation on any input line via five 24-bit registers. Output drivers employ open-collector transistor architecture with 1 kOhm pullup, capable of sinking up to 64 mA continuous load current. Input drivers accept ±15 V / -5 V signals with 1.25 V logic threshold and 50 mV hysteresis. Socketed 100 Ohm termination resistors (factory default) across each differential pair allow user modification or removal.
Technical Specifications
• Form Factor: Single-wide Type I IndustryPack (1.8 × 3.9 inches)
• IndustryPack Interface: ANSI/VITA-4 compliant, 8 MHz, zero wait states
• Digital Lines: 24 differential I/O, individually configurable
• Input Specification: +15 V / -5 V range, 1.25 V threshold, 50 mV hysteresis
• Output Specification: Open-collector, 64 mA continuous sink current
• Differential Standards: EIA-422 and EIA-485
• Common Mode Range: +12 V to -7 V
• Double Buffering Clock: Selectable 8 MHz internal or external source with programmable polarity
• Power Consumption: +5 VDC, 510 mA typical (no load)
• Operating Temperature: 0 to +70°C
• Storage Temperature: -40 to +85°C
• Humidity: 5 to 95% non-condensing
• Weight: 0.06 kg
– Key Features
• Interrupt capability on any input line via configurable 24-bit registers
• Master/slave synchronization mode; master redrives external clock via I/O line 23
• ESD protection via LineSafe technology (IP-UNIDIG-I-E variant)
• User-selectable termination resistor values
– Typical Applications
• Multi-channel simulation and real-time control systems
• Industrial process monitoring with synchronized I/O latching
• Distributed IndustryPack clusters requiring clock-synchronous operation
– Compatibility & Integration
IndustryPack carriers implementing ANSI/VITA-4 architecture support this module.
