If you want to have control over how variables are defined when reading a text file then write your own data step. CSV files are easy to read.
But I don't understand what your question is.
First DATETIME is a format for a DATETIME value, not for a DATE value. Second your example of how the text looks in the CSV is not in the DATETIME format but some other format.
Are you asking whether SAS has a format that will display datetime values as strings that look like this:
MM/DD/YYYY HH:SS
I don't think it does, but you could create your own using PICTURE statement in PROC FORMAT.