This means the Tipp Town outfit are still in the running to retain the trophy they won for an eight time last season.
Thurles Town are also through to the last 16 as a result of overcoming Shannon Hibernians 4-1 in Clare.
However, Tipperary Town – who were playing at this stage of the competion for the first time in their history – are out.
Dungarvan Utd beat them 4-2 in Waterford.
