Anonymous Verified Buyer
" Very responsive and helpful, competitive pricing. Good source! "
July 2025
PIO-24
PIO-24, 24 Digital I/O Ports, 2.0 to 5.0V, 400mA, Digital I/O Interface Board
Actual item may vary if no part number is provided on quote request.
✔ 2 Year Warranty Included
✔ Free Domestic Ground Shipping
✔ NIST Calibration Available
Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
Carol Zimme**** Verified Buyer
" Very responsive and helpful, competitive pricing. Good source! "
July 2025
Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
Keithley PIO-24 Digital I/O Interface Board
The Keithley PIO-24 is a versatile parallel digital I/O interface board designed for IBM PCs and compatibles. 24 lines of high-current digital input/output are available, arranged into three PA, PB, and PC ports that are compatible with TTL and CMOS. The PIO-24 is extremely versatile for a range of applications, including reading switch inputs, controlling peripherals, and activating relays, because each port can be set as an input or output. To improve compatibility with current systems, the board operates in Control Word Mode 0 and emulates the 8255 Programmable Peripheral Interface.
The PIO-24 can theoretically handle a large range of input and output voltages and currents. The input high voltage spans 2.0 to 5.0V, whereas the input low voltage spans -0.5 to +0.8V. The board offers two output voltages: a high voltage of 2.7V with a source current of 3mA and a low voltage of up to 0.55V with a sink current of 64mA. In order to provide effective and dependable operation in complicated systems, it also has an interrupt input channel with an interrupt-enable line that may be routed to six different interrupt levels on the PC Bus.
The PIO-24 works with Microsoft Windows 95/98 or Windows NT 4.0 or higher and requires a PC/AT (386 or Pentium CPU) with at least 2 MB of RAM. It includes DriverLINX software, which makes configuration and integration easier. The SFC-37 Mating Connector, C-1800 Flat Cable, STA-U Screw Connector Panel, and other accessories for the PIO-24 improve its usability and functionality in a variety of applications.
| Model | PIO-24 |
|---|---|
| Digital I/O Ports | 24 lines of digital I/O |
| Compatibility | IBM PC or compatible AT (386 or Pentium CPU) with a minimum of 2 MB memory; Microsoft Windows 95/98 or Windows NT 4.0 or higher |
| Input Low Voltage | -0.5 to +0.8V |
| Input High Voltage | 2.0 to 5.0V |
| Input Low Load Current | -0.4mA (PA, PB, and PC) |
| Input Load High Current | 70µA (PA, PB, and PC) |
| Interrupt Enable Load Current | -0.9mA |
| Interrupt Load Current | 0.4mA |
| Output Low Voltage | up to 0.55V (Isink = 64mA) |
| Output High Voltage | 2.0V (Isource = 15mA); 2.7V (Isource = 3mA) |
| Interrupts | Interrupt input channel with an interrupt-enable line; can be directed to six different levels (IRQ2 to IRQ7) on the PC Bus |
| Addressing | 10-bit I/O address decode; uses four consecutive I/O addresses; multiple PIO-24 boards can be installed at different base addresses |
| Power Consumption | 400mA typical at +5V |
| Operating Temperature Range | 0°C to 70°C |
| Storage Temperature Range | -40°C to 100°C |
| Humidity | 0 to 90% non-condensing |
| Connector | 37-pin D connector; +5V, +12V, -12V power levels available from the PC supplies on the rear connector |
| Size | Half-slot form factor |
Associated part numbers for PIO-24:
Delivery:
Eligible returns may be accepted within 30 days at Apex Waves’ discretion. A 25% restocking fee applies; non-refundable and built-to-order products are excluded.
Payment:
Receive Price & Availability Today!
Ask About Our Tiered Calibration Levels
Option & Modules:
Confirm Your Requirements or Versions
Cost & Lead Time Available Upon Request for Service
Repair Evaluation: $150
Common Typos:
Why Buy From Apex Waves:
