Patent ID: 6289293
Filing Date: 2001-09-11
Classification: G01R,G06F

Abstract:
A device used in a tester for testing I/O ports of an electronic device, comprising:a probe card and a device under test (DUT) card, wherein the DUT card comprises a plurality of testing I/O ports and a plurality of addressing ports;a plurality of switching devices, wherein the switching device comprises a plurality of input ports, a plurality of output ports, a first control input, and a second control input, wherein the number of input ports and output ports of the switching device is identical to that of the testing I/O ports of the DUT card, wherein the input ports of the switching device are coupled to the probe card, wherein the I.sub.th output ports with the same relative position of all the switching devices are connected together and coupled to the I.sub.th testing I/O port of the DUT card; anda decoder which comprises a plurality of inputs and outputs, wherein the inputs of the decoder are coupled to the addressing ports of the DUT card, wherein the outputs of the decoder acting as the control signals and complimentary control signals are connected to the first control input and the second control input of the switching devices, respectively, to enable one of the switching devices.