Patent ID: 8446164

Claim:
A semiconductor device test system comprising: a test header which tests a semiconductor device by a test controller; and a high fidelity tester access fixture (HIFIX) board which establishes an electrical connection between the semiconductor device and the test header, and includes a Device Under Test (DUT) test unit which processes a read signal generated from the semiconductor device by making one pair with a driver of the test header and transmits the processed read signal to the test header, wherein the DUT test unit includes: a plurality of pin electronic (PE) units, each of which includes a HIFIX-side driver which records a pattern signal received from the test header in the semiconductor device, and a HIFIX-side comparator which compares the read signal generated from the semiconductor device with a reference signal received from the test header and outputs the result of comparison between the read signal and the reference signal; a plurality of digital comparators which correspond to the plurality of pin electronic (PE) units, respectively, determines whether or not there is a failure in the output signal of the HIFIX-side comparator and stores the determined result; a bundle of switches which turn on or off a connection between the test header and the plurality of pin electronic (PE) units; and a switch driver which drives the bundle of switches.