The NI PXI-6509 is a 96-channel digital I/O interface module for PXI systems, delivering high-density single-ended connectivity with individual 8-bit port programming. Supporting 5 V TTL/CMOS logic levels, it provides flexible input/output configuration for automated test equipment, industrial control, and data acquisition applications. The module integrates programmable digital filtering, configurable power-up states, and change detection capabilities to streamline complex digital switching and signal monitoring tasks.
Technical Specifications
Digital I/O Architecture
• 96 input/output lines, single-ended configuration
• 5 V TTL/CMOS logic levels
• Output voltage range: 0 V to 5 V
• Input voltage range: −0.5 V to 5.5 V
• Absolute maximum rating: −0.5 V to +5.5 V with respect to GND
• High-level output current (IOH): −24 mA; VOH 3.4 V at −24 mA
• Low-level output current (IOL): 24 mA; VOL 0.78 V at 24 mA
• Maximum current per port: 100 mA
• Input thresholds: VT+ 2.2 V (min), VT− 0.8 V (min), hysteresis 0.2 V
• Input currents: IIH 260 µA (typical), IIL −1250 µA pull-up / −20 µA pull-down (typical)
• Pull-up resistor: 4.7 kΩ (typical); pull-down: 47 kΩ (typical)
Power and Connector
• +5 V I/O connector supply: +4.0 V to +5.25 V, 1 A maximum
• Power consumption: 375 mA @ +3.3 VDC, 250 mA @ +5 VDC
• 100-pin female 0.050 series SCSI connector
• Module dimensions: 16.0 cm × 10.0 cm (6.3 in. × 3.9 in.); 173 g
– Key Features
• Each 8-bit port independently configurable as input or output
• Programmable input digital filters: 400 ns to 200 ms timing intervals
• Configurable power-up states for glitch-free initialization
• Software-selectable input pull-up/pull-down bias
• Change detection capability
– Typical Applications
• Automated test equipment (ATE) requiring high-channel-count switching
• Industrial control systems with distributed I/O demands
• Multi-channel data acquisition and signal conditioning
• Real-time digital monitoring and test stimulus generation
– Compatibility & Integration
• Driver: NI-DAQmx
• Programming support: ANSI C/C++, LabVIEW, LabVIEW SignalExpress, LabWindows/CVI, Measurement Studio, Visual Studio .NET
• Configuration tool: Measurement & Automation Explorer (MAX)
• Operating temperature: 0 °C to 55 °C
• Safety: IEC 61010-1, EN 61010-1, UL 61010-1, CSA 61010-1 (Category I)
