CONNECTING SYSTEM OF LOGICAL DEVICES

PURPOSE:To attain level conversion in a high speed by approaching a power supply voltage to another power supply of a logical circuit while keeping a potential difference of the power supply voltage applied to the other logical device constant to decrease the potential difference of the power supply...

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1. Verfasser: OOBA TAKAO
Format: Patent
Sprache:eng
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Zusammenfassung:PURPOSE:To attain level conversion in a high speed by approaching a power supply voltage to another power supply of a logical circuit while keeping a potential difference of the power supply voltage applied to the other logical device constant to decrease the potential difference of the power supply voltage applied to a level converter. CONSTITUTION:A circuit 1 has an emitter coupled logical ECL level, a circuit 3 has a transistor transistor logic TTL level and a circuit 2 performs level conversion coupling the circuits 1 and 3. The entire potential of the circuit 3 is shifted negatively the same as the circuit 1 by applying zero V to a terminal 8 to have a positive voltage and giving a negative voltage to a terminal 9 to have zero V, a level of a signal 11 outputted from the circuit 2 to the circuit 3 is formed suitably and the circuit 2 is constituted by receiving suitably a signal 13 inputted from the circuit 3 to the circuit 2, allowing to solve the problem of dielectric strength and to make the circuit 2min.