Differential type MOS transmission circuit
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United States of America Patent
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Feb 27, 1996
Grant Date -
N/A
app pub date -
Jul 13, 1994
filing date -
Jul 21, 1993
priority date (Note) -
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Abstract
A differential type MOS transmission circuit includes a signal driving circuit and a signal receiving circuit to realize high speed transmission for a short distance transmission between different LSIs, etc. A pair of transmission lines between the signal driving circuit and the signal receiving circuit are driven by a pair of drivers in the signal driving circuit so as to take either one of three states, i.e. one state where both of the lines are in a precharged states and two states where either one of the lines is in a discharged state. A signal driving circuit includes signal generating circuits generating variations in control signals varying pulse-like in response to rise and fall of an input signal to thereby obtain the discharge state. The signal receiving circuit generates an output signal depending on the state of the transmission lines and is constructed of a Schmitt trigger circuit with a hysteresis characteristic, for which an input threshold voltage for output logical values has a level smaller than a potential difference between the precharged level and the discharged level.
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