I. Basic Information

Model: PCI-DIO-96 (= PCI-6508)

Part Number: 777387-01, 182920-01, 779196-50

Bus: 32-bit PCI (5V/3.3V, 33MHz), does not support PCIe

Channels: 96 bidirectional DIO (4×24-bit PPI, each PPI divided into 3×8-bit ports)

Level: 5V TTL/CMOS (input: 0.8V low / 2V high; output: 2.5mA / channel)

Rate: Static I/O, maximum approximately 50kHz (software timing)

Handshake: 2-wire hardware handshake (asynchronous select / response)

Status: EOL (stock / second-hand)

Driver: NI-DAQmx + traditional NI-DAQ dual compatibility

Core: 4 pieces of 8255 PPI + 8253 timer

II. Core Specifications (Easy to Understand)

✅ Channels and Configuration

96 bidirectional DIO: 4 independent 24-bit PPI, each PPI contains 3 8-bit ports (A/B/C)

Port mode: Each 8-bit port can be independently set as input/output

Power-on state: Default pull-up (100kΩ), jumpers can be used to set as high/low

Drive capability: Output 2.5mA/channel (TTL), input open drain

?? Hardware and Interfaces

Connector: 100-pin high-density male connector (all 96 DIO + control / power)

Transmission mode: PIO + DMA (batch data)

Onboard cache: 48KB FIFO (16KB per 32-bit port)

Isolation: ❌ No channel isolation; 2500V AC input - chassis isolation

Power supply: PCI bus power supply, typical 12W, maximum 15W

Temperature: 0°C ~ 55°C (operating)

Size: 16.5×10.2cm (6.5×4.0in)

⚠️ Performance Features (Low Speed, High Density)

Maximum rate: Software timing approximately 50kHz; continuous 1–10kHz

Not supported: High-speed mode I/O, RTSI synchronization, hardware timing

Advantages: Many channels, low price, mature driver, compatible with old systems

III. PCI-DIO-96 vs Alternative Models (Key Differences)

1) PCI-DIO-96 (6508, older model)

✅ 96 TTL, low speed, 2-wire handshake, PCI, EOL

⚠️ Not high-speed, no isolation, only PCI, does not support PCIe

2) Direct Replacement: PCI-6509 / PCIe-6509 (96-channel upgraded version)

✅ 96 TTL, 24mA high drive, digital filtering, watchdog

✅ PCIe version natively supports Win10/11, DAQmx, in stock

✅ Fully compatible with old programs, channel definitions are consistent

3) Isolation Replacement: PCI-6528 (48-channel isolated DIO)

✅ 48-channel inter-channel isolation (60VDC), relay output, industrial anti-interference

⚠️ Channel number reduced by half, rate low (≤1kHz)

IV. System Compatibility

System: Windows 2000/XP/Vista/7/10 (32/64-bit), LabVIEW Real-Time

Driver: NI-DAQmx (recommended), traditional NI-DAQ

Software: LabVIEW, LabWindows/CVI, C/C++, Python, VB6

Not supported: PCIe slot, native Linux, high-speed acquisition

V. Typical Applications (Low Speed, Large Number of Switching Signals)

Industrial IO expansion: PLC / industrial computer 96-channel switch input/output

Test fixture control: relays, solenoids, LED array batch control

Sensor array acquisition: proximity switches, limit switches, photoelectric sensors

Old production line maintenance: replace the same faulty card to maintain the 96-channel DIO system operation VI. Common Questions

⚠️ PCIe cannot be used: Must be an old-fashioned PCI slot; PCIe should be selected as PCIe-6509

⚠️ Slow speed: Suitable only for low-frequency analog switches; High-speed should be selected as PCI-6534 series

⚠️ No channel isolation: For industrial sites, external optocouplers / relays are required to avoid high voltage damage

VII. Recommended alternative models (must be selected)

PCI-6509: PCI, 96 channels TTL, 24mA, DAQmx, in stock

PCIe-6509: PCIe×1, 96 channels TTL, native for Windows 10/11, in stock

PXI-6509: PXI bus version, suitable for chassis integration