Patent ID: 7518392

Claim:
A method for testing a device under test, the method comprising: providing a tester, wherein the tester includes: a threshold driver, wherein an input of the threshold driver is electrically coupled to a threshold voltage input, and wherein an output of the threshold driver is electrically coupled to a test pin node, which is electrically coupled to a pin of the device under test; a test driver, wherein an input of the test driver is electrically coupled to a drive data input, and wherein an output of the test driver is electrically coupled to a first measurement switch; a comparator, wherein a first input of the comparator is electrically coupled to a second measurement switch, wherein a second input of the comparator is electrically coupled to a threshold comparator input; closing the first measurement switch and the second measurement switch, wherein the output of the test driver is electrically coupled to the test pin node, and wherein the first input of the comparator is electrically coupled to the test pin node. applying a first voltage to the threshold voltage input; and applying a second voltage greater than the first voltage to the threshold comparator input; and sensing an output of the comparator, wherein a voltage at the test pin node less than the second voltage is detected, and wherein the device under test is failed for lack of continuity.