The IN32 card has thirty-two inputs, each on a 3-pin header. The other two pins on the 3-pin header are tied to screw terminals. All input are 5 Volt tolerant and space is provided to attach pull-up or pull-down resistor packs.
- Thirty-two binary inputs
- 3.3 or 5 Volt input
- Optional pull-up or pull-down resistors
- Convenient screw terminal connections
- Uses the ESPI 7474 circuit for reliable operation
Hardware:The schematic and layout of the IO8 are shown below. The Eagle schematic and board files are available here: in32.sch and in32.brd. The bill-of-materials is available here: in32.txt.