I am using a SCSI-2 Half-Pitch DB50 connector as an I/O expansion connector, due to size constraints. However, it seems as if pretty much all cables manufactured in recent years are differential twisted-pair cables. This creates a lot of problems for me, because the twisted pairs will crosstalk with each other in a pretty nasty way.
I have searched the typical vendors (digikey, l-com, mouser, newark) but I cannot find a single-ended SCSI cable. They can sometimes be found on ebay, etc, but I am not comfortable using those for production units.
My question is, assuming I can't find a reliable source of single-ended SCSI cables, is there some method that I can use to prevent crosstalk between the twisted pairs of a SCSI cable?
Digital and analog signals are run in the cable. The digital signals are 5V inputs and outputs. Data rate is max of maybe 10 MHz, typically less than 1 MHz.
There are no differential signals. The decision to use the SCSI connector was made before it was known that single-ended SCSI cables are a legacy product that are difficult to find. I know that twisted-pair is designed to couple the wires; it's unfortunate that I discovered late in development that modern SCSI cables are twisted-pair. I am considering potential solutions, but I wanted to see if there wouldn't be some "easy" way to decouple the wires before investigating other solutions (e.g. SCSI connectors that attach to ribbon cables)