| Technical specifications |
| Digital input / output |
| Digital type | 8255 emulation, Mode 0 |
| Output | 74ABT244 |
| Input | 74LS373 |
| Configuration | 4 banks of 8, 4 banks of 4, programmable by bank as input or output |
| Number of channels | 48 I/O |
| Output high | 2.0 volts min @ -15 mA |
| Output low | 0.55 volts max @ 64 mA |
| Input high | 2.0 volts min, 5.5 volts absolute max |
| Input low | 0.8 volts max, -0.5 volts absolute min |
| Power-up / reset state | Input mode (high impedance) |
| Pull-up/pull-down resistors | SIP resistor locations provided for pull-up or pull-down configuration. |
| Power consumption |
| +5V Operating | 405 mA typical, 1.6 A max |
| +5 V User Output | 1 A max. per +5 V User Output (pin 49, protected with 1 A slow blow fuse) |
| +5 V User Output Fuse | 0452001. - Littelfuse 1A NANO2® Slo-Blo® Subminiature Surface Mount Fuse
or equivalent |
| Environmental |
| Operating temperature range | 0 to 50 °C |
| Storage temperature range | -20 to 70 °C |
| Humidity | 0 to 90% non-condensing |
| Mechanical |
| Card dimensions | 174.7 mm (L) x 106.6 mm (H) x 18.72 mm (W max)
6.88” (L) x 4.2” (H) x 0.74" (W max) |
