The NI PCI-6509 is a 96-channel digital I/O interface module for PCI bus systems, delivering high-density bidirectional digital input and output in a compact form factor. Each channel sources or sinks 24 mA and operates at 5 V TTL/CMOS logic levels, making it suitable for direct interfacing with solid-state relays, LEDs, and industrial control devices. The module integrates software-configurable watchdog timers, digital filtering for debouncing, edge detection on input lines, and programmable pull-up/pull-down resistors on a per-port basis to ensure reliable operation in demanding automation and data acquisition environments.
Technical Specifications
• Digital I/O Channels: 96 bidirectional
• Logic Standard: 5 V TTL/CMOS
• Current Drive: 24 mA per channel (sink or source)
• Output Voltage Range: –0.5 V to 5.5 V
• Input Voltage Range: 0 V to 5 V
• Input Protection: ±20 V on up to two pins
• Port Current Limit: 100 mA maximum per port
• Supply Voltage at I/O Connector: +4.0 V to +5.25 V (1 A maximum, expandable to 1 A external via four-pin hard disk drive power connector)
• Operating Temperature: 0 °C to 55 °C
• Storage Temperature: –20 °C to 70 °C
• Dimensions: 4.9 in. × 3.8 in. (12.4 cm × 9.7 cm)
• Weight: 2.5 oz. (70.9 g)
– Key Features
• Programmable power-up states for glitch-free initialization
• Software-selectable digital filter for noise rejection and switch debouncing
• Watchdog timer routes critical outputs to safe states upon software failure
• Rising-edge, falling-edge, or dual-edge change detection on selected or all input lines
• Per-port software-configurable pull-up and pull-down resistor control
– Typical Applications
• Industrial automation and process control systems
• Data acquisition platforms requiring high-channel-count digital I/O
• Relay logic and discrete device interfacing
• Machine vision and test automation
– Compatibility & Integration
The module connects via 100-pin female 0.050 series SCSI connector and operates under NI-DAQmx 7.1 or later. Supported development environments include LabVIEW, LabWindows/CVI, Measurement Studio, Visual Basic, and ANSI C/C++. Compatible with Windows 2000/XP and Windows Vista (x86/x64). Note: This product is discontinued; the PCIe-6509 is the recommended replacement.
