SEMICONDUCTOR MEMORY DEVICE HAVING PHYSICALLY SHARED DATA PATH AND TEST DEVICE FOR THE SAME

摘要

PURPOSE: A semiconductor memory device having a physically shared data path and a test device for the same are provided to perform test data which is extracted by shared data path in case that a data path is physically shared. CONSTITUTION: A semiconductor memory device physically shares data path between chips. A semiconductor memory device comprises a data output driver(120). The data output driver compares add data and first and the second reference data. A data output driver supplies voltage to a data input/output pad. The voltage has a level corresponding to a comparison result.