Hi groups,
for a CAN2B core demo : which differential input model for xilinx (spartan3E) can fit at best a 80C250 tranceiver ? I would like connect filed bus pair (canh and canl) directly to the fpga input diff. pair ? is it reallistic ? or a tranceiver is needed ? LVDS_25, MINI_LVDS ???
thanks raph
You really need a CAN transceiver.
CAN is not differential in quite the same way as other diff systems; CANH sits at a nominal 2.5V and goes above this for a dominant condition, CANL sits at a nominal 2.5V and goes below this for a dominant condition. Both sit at about 2.5V when recessive.
Cheers
PeteS
Look at the SN65HVD1050 from Texas Instruments. It's Hi groups,
I use the TI SN65HVD232 in an existing design and I've never had a failure.
Here's the TI offerings for VDD = 3.3V:
Cheers
PeteS
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