SQL & PL/SQL :: How To Get Max (value) With Its Corresponding Datetime

This is my table

ID timestamp value
1 2013-09-09 01:09:00.000 1234
2 2013-09-09 02:00:00.000 123
1 2013-09-09 03:09:00.000 1233
2 2013-09-09 21:09:00.000 125

I need to find max(value) with its corresponding time stamp .. this table has approximately 500000 records with 180 distinct IDs. Need to find max(value) group by IDs.

Expected result:

ID timestamp value
1 2013-09-09 01:09:00.000 1234
2 2013-09-09 21:09:00.000 125

We have a query but its returns 00 in hh:mm:ss instead of exact timestamp.