Anonymous Verified Buyer
" Very responsive and helpful, competitive pricing. Good source! "
July 2025
PCI-6503 In Stock | Ships Today
PCI-6503, 24 I/O Channels, 50-Pin Connector, Digital I/O Device
Rated 4.5/5 | 19 ratings
Actual item may vary if no part number is provided on quote request.
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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
National Instruments PCI-6503 Digital I/O Device
The National Instruments PCI-6503 (Part Number: 777690-01) board is a parallel, digital I/O interface, which can be used with PCI bus computers. This 24-bit model comes equipped with 1 x 82C55A PPI chip, which is designed to operate in unidirectional, handshaking, or bidirectional mode, and can issue interrupt requests to your personal computer. The digital input/output lines of this model are all accessible through a male connector (50-pin).
The National Instruments PCI-6503 is a completely jumpless and switchless DAQ board. At the time of startup, all of its resources are allocated completely automatically. Thus, the user does not have to set base addresses or interrupt levels manually. With this board, the user can operate their personal computer as a complete digital I/O solution and system controller in a variety of applications, such as production testing, laboratory testing, and process controlling. The NI PCI-6503 offers remarkable transfer rates up to 50 kbytes per second (max) with the help of NI-DAQ software and the constant sustainable rate (typical) offered is 1 to 10 kbytes per second. The device is equipped with a 50-pin male ribbon-cable I/O connector. The PCI-6503 has 24 bidirectional digital I/O channels with a TTL compatibility.
The National Instruments PCI-6503 is designed to receive 2.2 V (Min) and 5.3 V (Max) input logic high voltage. This mode can work with −0.3 V (Min) and 0.8 V (Max). In addition, it supplies +5 V of power from the power supply via Pin 49. With this board, the user can draw 2.5 mA (typical) output current. This board requires 400 mA at +5 VDC (±5%) power to operate, and the power provided at the I/O connector remains around +4.65 to +5.25 V.
The DIO device can be programmed using software packages/application development environments (ADEs) such as LabVIEW, LabWindows/CVI, or Measurement Studio. Additionally, it weighs 1.9 oz, and measures 4.8 x 3.7 in. in physical dimensions. The NI device has a recommended operating temperature range of 0 °C to 55 °C, a storage temperature range of –20 °C to 70 °C.
| Model | PCI-6503 |
|---|---|
| Manufacturer | National Instruments |
| Part Number | 777690-01 |
| Series | DIO Series |
| Type | Digital I/O Device |
| Pins | 50 |
| I/O Channels | 24 |
| Bus Type | Slave |
| Power Consumption | 400 mA (at +5 VDC) |
| I/O Connector Type | 50-Pin Male Ribbon-Cable Connector |
| Compatibility | TTL |
| Operating Temp Range | 0 to 55 °C |
| Storage Temp Range | –20 to 70 °C |
| Dimensions | 4.8 × 3.7 in. (12.2 × 9.5 cm) |
| Weight | 1.9 oz. (55 g) |
| Warranty | Three Year Warranty |
| PCI-6503 Manual | User Manual and Maintenance Manual Available for Download |
| Price | Request a Quote for Pricing |
Associated part numbers for PCI-6503:
National Instruments PCI-6503 Frequently Asked Questions
Question: Does the PCI 6503 require a separate card manager for configuration?
Answer: This device is Plug and Play compatible and does not require a separate card manager for configuration.
Question: Which ports on the PCI-6503 NI DAQ are for digital data?
Answer: On the Digital I/O Device, Ports A and B are used for digital data I/O. Port C can be configured for digital data I/O also.
Question: How can I select whether the NI PCI-6503 powers up in a low or high state?
Answer: You can use a jumper to select whether the lines of the device power up in the high or low state.
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