Other Parts Discussed in Thread: SN74HC245
We have strung 50 of these TPIC6B595's together in series to form a large multiplexer with relays. The schematic may be seen here:
There appears to be some bit errors on occasion. I was wondering if there is anything obviously wrong or not optimal about our design.
We are using a 5V FTDI USB to SPI cable to drive the shift registers, which act as drivers for the Littlefuse HE3600 series reed relays.