Keithley KPCI-PIO24 PCI-Bus 24-Channel Parallel Digital I/O Module

The Keithley KPCI-PIO24 is a 32-bit PCI-bus digital I/O module that provides 24 TTL-level parallel I/O lines for industrial automation, data acquisition, and process control applications. The module organizes its I/O capability into three independent 8-bit ports (PA, PB, and PC), each independently configurable as input or output under software control. Port PC can be further subdivided into two 4-bit half ports for enhanced application flexibility. Built around the AMCC S5933 PCI bus controller, the KPCI-PIO24 supports plug-and-play operation and leverages the PCI bus 32-bit architecture for reliable integration into host systems. ## Technical Specifications • Digital I/O: 24 TTL-level lines organized into three 8-bit ports • Port Configuration: PA, PB, and PC independently configurable as input or output; PC subdivides into two 4-bit half ports • Output Drive: 15 mA source, 64 mA sink • Input Voltage Levels: VIH 2.0 V minimum, VIL 0.8 V maximum • Input Current: ±1 µA maximum (IIH at VIN = 2.7 V) • PCI Bus Controller: AMCC S5933 • Power Supply Access: +5V, +12V, −12V, and −5V externally accessible from host PC • Operating Temperature: 0°C to 50°C • Storage Temperature: 0°C to 70°C • Humidity: 0 to 95%, non-condensing ## Key Features • All ports default to input configuration on power-up or reset • Port read/write access available regardless of current configuration without affecting external signal levels • Accessible interrupt configuration for customizable programmed I/O operations • DriverLINX software API included; supports Visual C/C++, Visual Basic, and Delphi application development • Complies with EN61010-1/IEC 1010 for Installation Categories I and II per IEC 60664 ## Typical Applications • Industrial automation systems requiring parallel digital I/O • Data acquisition and process control • Custom control and monitoring applications ## Compatibility & Integration The KPCI-PIO24 is compatible with ERB-24, SSIO-24, SRA-01, and ERA-01 accessories. DriverLINX software provides register-free configuration and eliminates the need for low-level register programming.