Circuit configuration for protecting terminals of integrated circuits
AssigneeSiemens Aktiengesellschaft
InventorsChristian Stein, Xaver Guggenmos, Joachim Krause
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Abstract
A circuit configuration protects the terminals of integrated circuits, in particular CMOS circuits. The circuit configuration includes bypass transistors connected between the terminals of the integrated circuit and respective supply potential terminals. The bypass transistors are thin-oxide transistors of the n-channel type and are connected such that their gate-to-source voltage is zero.
Claims4
A circuit configuration for protecting an integrated circuit connected to first and second signal lines and to first and second supply lines, comprising:
- two first and two second thin-oxide MOS-transistors of an n-channel type, each with gate, drain and source terminals, wherein
- said drain terminals of said fist thin-oxide MOS-transistors are connected to the first supply line, and said gate and source terminals of each of said first MOS-transistors are mutually connected to respective ones of the signal lines;
- and
- said drain terminals of said second thin-oxide MOS-transistors are connected to respective ones of the signal lines and said gate and source terminals are mutually connected to the second supply line.
A circuit configuration for protecting terminals of CMOS integrated circuits connected to first and second supply potential terminals and to first and second signal lines, comprising:
- two first and two second thin-oxide MOS-transistors of an n-channel type, each with gate, drain and source terminals, wherein
- said drain terminals of said first thin-oxide MOS-transistors are connected to the first supply potential terminal, and said gate and source terminals of each of said first MOS-transistors are mutually connected to respective ones of the signal lines;
- and
- said drain terminals of said second thin-oxide MOS-transistors are connected to respective ones of the signal lines and said gate and source terminals are mutually connected to the second supply potential terminal.
Dependencies are inferred from the claim text.