DRV8860: How many DRV can be daisy chained?

Hi in the need to control 200 small solenoids, I am asking how many of these 8 output chips can be daisy chained together in order to control them via serial bus.

Datasheet does not mention anything apart from the fact that every single driver acts as a regenerating buffer..

Any hints or maybe a suggestion on multi output (16 or more) other driver that need to handle no more than 200mA per channel?

Best regards and thanks