Electricity: measuring and testing – Plural – automatically sequential tests
Patent
1985-07-31
1988-01-19
Karlsen, Ernest F.
Electricity: measuring and testing
Plural, automatically sequential tests
324158R, G01R 3128
Patent
active
047206713
ABSTRACT:
A semiconductor device testing device for testing a semiconductor device having input/output terminals includes a dynamic load circuit provided for each of the input/output terminals of the semiconductor device and a comparator provided for each of the input/output terminals of the semiconductor device which compares the voltage value obtained at the input/output terminal with a predetermined value to detect whether the internal state of the semiconductor device is a high impedance state or not. The confirmation of the electrical connection between the semiconductor device and the testing device is thereby conducted by the dynamic load circuit and the comparator.
REFERENCES:
patent: 3490041 (1970-01-01), Shapiro et al.
patent: 4651088 (1985-06-01), Sawada
Sawada Keiichi
Tada Tetsuo
Karlsen Ernest F.
Mitsubishi Denki & Kabushiki Kaisha
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