I didn't look at the datasheets, but my reolection is that the digit driver has to support 7 segments and the segment driver only supports 1.
In some chips it's expected that there is an external transistor for the digit drive.
Switching a chip from CA to CC and vice versa requires one to change the current direction at the digit and segment sides of the driver.
In some chips it's expected that there is an external transistor for the digit drive.
Switching a chip from CA to CC and vice versa requires one to change the current direction at the digit and segment sides of the driver.