Keithley Instruments PIO-24 Digital Interface Board

Description:

The Keithley Instruments PIO-24 Digital Interface Board is used to provide high-current programmable parallel digital input and output for PC-based data acquisition, industrial automation, and automated test systems. Commonly installed in IBM PC and PC-compatible ISA computers for controlling relays, monitoring digital inputs, communicating with external peripherals, and interfacing with industrial equipment. Maintenance technicians, system integrators, and automation engineers use this digital interface board for equipment upgrades, machine control, automated testing, and replacement of legacy digital I/O hardware.

Applications:

The Keithley Instruments PIO-24 Digital Interface Board is designed for parallel digital I/O applications requiring higher output drive capability than standard digital interface boards. It is commonly used in industrial automation, laboratory instrumentation, manufacturing process control, relay and solenoid control, contact closure monitoring, switch input acquisition, and automated test equipment (ATE) where reliable high-current digital interfacing is required.

Technical Specifications:

• Manufacturer: Keithley Instruments, Inc. (formerly Keithley MetraByte)
• Model: PIO-24
• Product Type: Parallel Digital Interface Board
• Bus Interface: ISA (Industry Standard Architecture) PC Bus
• Digital I/O Lines: 24 High-Current Programmable Digital I/O Lines
• Interface Controller: Intel 8255 Programmable Peripheral Interface (PPI) Compatible (Mode 0 Emulation)
• Ports: Port A (8-bit), Port B (8-bit), Port C (8-bit)
• Logic Compatibility: TTL and CMOS Compatible
• Input Voltage (Logic High): 2.0 V to 5.0 V
• Input Voltage (Logic Low): -0.5 V to 0.8 V
• Output Drive Capability: Up to 64 mA Sink Current per Output Line
• Interrupt Support: Programmable Interrupt Input with Selectable PC IRQ Levels
• Connector Type: 37-pin D-Sub Male I/O Connector
• Power Requirements: +5 V supplied from the PC ISA Bus (typical consumption approximately 400 mA)
• Operating Temperature: 0°C to 70°C
• Typical Applications: Relay Control, Peripheral Communication, Digital Monitoring, Machine Automation, Data Acquisition, and Automated Test Equipment (ATE).

Common Replacements:

• Keithley Instruments KPCI-PIO24
• Keithley Instruments PIO-12
• Keithley Instruments KPCMCIA-PIO24