Single-transistor two resistor circuit which translate test signals to selectable voltage levels
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United States of America Patent
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Nov 29, 2005
Grant Date -
N/A
app pub date -
Jan 16, 2004
filing date -
Jan 16, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A signal translator circuit, for use in sending test signals to an IC-chip in a chip testing system, includes first and second resistors, and a single transistor. The transistor has a current channel which is coupled in series with the first resistor between a source voltage terminal and an output terminal. The single transistor also has a control lead, for enabling and disabling the flow of current through the current channel, which receives an input test signal at voltage levels that are to be translated. The output terminal is coupled through the second resistor to a reference voltage terminal. The output terminal is also coupled to an input terminal of a socket which is structured to hold the IC-chip.
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