Difference between LEM CAB500-C/SP5 and LEM CAB500-C/SP5-001

The difference in the parts is that the standard part LEM CAB500-C/SP5 is 500kbps and LEM CAB500-C/SP5-001 is 250kbps.

https://www.digikey.com/short/z1mvfv

This is not noted on the datasheet or the manufacturer website but they are working on an update.