| Specifications |
| Power consumption |
| +5V operating | 625 mA typical, 960 mA max |
| Digital input/output |
| Digital type | 8255 mode 0 emulation |
| Output | 74S244 |
| Input | 74LS373 |
| Configuration | 2 banks of 8, 2 banks of 4, programmable by bank as input or output |
| Number of channels | 24 I/O |
| Output high | 2.4 volts min @ -15 mA |
| Output low | 0.5 volts max @ 64 mA |
| Input high | 2.0 volts min, 7 volts absolute max |
| Input low | 0.8 volts max, -0.5 volts absolute min |
| Power-up/reset state | Input mode (high impedance) |
| Interrupts | INTA# - mapped to IRQn via PCI BIOS at boot-time |
| Interrupt enable | External (IR ENABLE, active low, disabled by default through internal resistor to TTL high) and programmable through PCI9052: 0 = disabled 1 = enabled (default) |
| Interrupt sources | External source (IR INPUT), polarity programmable through PCI9052;
1 = active high
0 = active low (default) |
| Environmental |
| Operating temperature range | 0 to 50 °C |
| Storage temperature range | -20 to 70 °C |
| Humidity | 0 to 90% non-condensing |
