| 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 |
