Semiconductor integrated circuit

A semiconductor integrated circuit comprising:

• at least one pass transistor circuit including a plurality of input terminals receiving different input signals, at least one control terminal receiving a control signal, and a plurality of insulated gate transistors each having a first electrode, a second electrode and a control electrode, said first electrodes of said plurality of insulated gate transistors being connected to the corresponding input terminals, said control electrodes of said plurality of insulated gate transistors being connected to the corresponding control terminal, said pass transistor circuit being responsive to said control signal applied to said control terminal for selectively outputting one of said input signals given from said plurality of input terminals;
• at least one drive circuit including an output terminal for outputting an output signal in response to the output of said pass transistor circuit, and at least one bipolar transistor having a control electrode connected directly to all said second electrodes of said plurality of insulated gate transistors, a first electrode connected to a predetermined potential, and a second electrode connected to said output terminal;
• said drive circuit further including:
• an NMOS transistor having a drain electrode connected to said output terminal, a source electrode connected to a second potential lower than said predetermined potential, and a gate electrode receiving the logically inverted signal of a signal outputted from said second electrodes of said insulated gate transistors;
• said bipolar transistor of said drive circuit includes:
• an NPN bipolar transistor having a collector electrode connected to said predetermined potential, a base electrode connected directly to said second electrodes of said insulated gate transistors, and an emitter electrode connected to said output terminal;
• a plurality of second input terminals corresponding to said plurality of input terminals of said pass transistor circuit for receiving the logically inverted signals of said input signals applied to said input terminals corresponding thereto;
• and
• a second pass transistor circuit including a second control terminal corresponding to said control terminal of said pass transistor circuit for receiving the same signal as said control signal applied to said control terminal corresponding thereto, and a plurality of insulated gate transistors each having a first electrode, a second electrode and a control electrode, said first electrodes of said plurality of insulated gate transistors being connected to the corresponding second input terminals, said control electrodes of said plurality of insulated gate transistors being connected to the corresponding second control terminal, said second electrodes of said plurality of insulated gate transistors being connected directly to said gate electrode of said NMOS transistor.

A semiconductor integrated circuit comprising:

• at least one pass transistor circuit including a plurality of input terminals receiving different input signals, at least one control terminal receiving a control signal, and a plurality of insulated gate transistors each having a first electrode, a second electrode and a control electrode, and first electrodes of said plurality of insulated gate transistors being connected to the corresponding input terminals, said control electrodes of said plurality of insulated gate transistors being connected to the corresponding control terminal, said pass transistor circuit being responsive to said control signal applied to said control terminal for selectively outputting one of said input signals given from said plurality of input terminals;
• at least one drive circuit including an output terminal for outputting an output signal in response to the output of said pass transistor circuit, and at least one bipolar transistor having a control electrode connected directly to all said second electrodes of said plurality of insulated gate transistors, a first electrode connected to a predetermined potential, and a second electrode connected to said output terminal;
• said drive circuit further including:
• an NMOS transistor having a drain electrode connected to said output terminal, a source electrode connected to a second potential lower than said predetermined potential, and a gate electrode receiving the logically inverted signal of a signal outputted from said second electrodes of said insulated gate transistors;
• said bipolar transistor of aid drive circuit includes:
• an NPN bipolar transistor having a collector electrode connected to said predetermined potential, a base electrode connected directly to said second electrodes of said insulated gate transistors, and an emitter electrode connected to said output terminal;
• an inverter having an input connected to said second electrodes of said insulated gate transistors of said pass transistor circuit in common, and an output connected to said gate electrode of said NMOS transistor.

A semiconductor integrated circuit comprising:

• at least one pass transistor circuit including a plurality of input terminals receiving different input signals, at least one control terminal receiving a control signal, and a plurality of insulated gate transistors each having a first electrode, a second electrode and a control electrode, said first electrodes of said plurality of insulated gate transistors being connected to the corresponding input terminals, said control electrodes of said plurality of insulated gate transistors being connected to the corresponding control terminal, said pass transistor circuit being responsive to said control signal applied to said control terminal for selectively outputting one of said input signals given from said plurality of input terminals;
• at least one drive circuit including an output terminal for outputting an output signal in response to the output of said pass transistor circuit, and at least one bipolar transistor having a control electrode connected directly to all said second electrodes of said plurality of insulated gate transistors, a first electrode connected to a predetermined potential, and a second electrode connected to said output terminal;
• said drive circuit further including:
• an NMOS transistor having a drain electrode connected to said output terminal, a source electrode connected to a second potential lower than said predetermined potential, and a gate electrode receiving the logically inverted signal of a signal outputted from said second electrodes of said insulated gate transistors;
• said bipolar transistor of aid drive circuit includes:
• an NPN bipolar transistor having a collector electrode connected to said predetermined potential, a base electrode connected directly to said second electrodes of said insulated gate transistors, and an emitter electrode connected to said output terminal;
• wherein said at least one pass transistor circuit includes first and second pass transistor circuits;
• said first pass transistor circuit including:
• a first input terminal receiving a first input signal;
• a second input terminal receiving a second input signal;
• at least one first control terminal receiving said control signal;
• a first insulated gate transistor having a first electrode connected to said first input terminal and a control electrode connected to the corresponding first control terminal;
• a second insulated gate transistor having a first electrode connected to said second input terminal and a control electrode connected to the corresponding first control terminal;
• said first pass transistor circuit being responsive to said control signal applied to said first control terminal for selectively outputting one of said first and second input signals inputted from said first and second input terminals;
• said second pass transistor circuit including:
• a third input terminal receiving the logically inverted signal of said first input signal;
• a fourth input terminal receiving the logically inverted signal of said second input signal;
• at least one second control terminal receiving said control signal;
• a third insulated gate transistor having a first electrode connected to said third input terminal and a control electrode connected to the corresponding second control terminal;
• a fourth insulated gate transistor having a first electrode connected to said fourth input terminal and a control electrode connected to the corresponding second control terminal;
• said second pass transistor circuit being responsive to said control signal applied to said second control terminal for selectively outputting one of said signals inputted from said third and fourth input terminals;
• wherein said at least one drive circuit includes first and second drive circuits;
• said first drive circuit including:
• a first output terminal for outputting a signal responsive to the output signal of said first pass transistor circuit;
• a first bipolar transistor having a control electrode connected directly to second electrodes of said first and second insulated gate transistors, a first electrode connected to said predetermined potential, and a second electrode connected to said first output terminal;
• a first NMOS transistor having a drain electrode connected to said first output terminal, a source electrode connected to said second potential, and a gate electrode connected to second electrodes of said third and fourth insulated gate transistors;
• said second drive circuit comprising:
• a second output terminal for outputting a signal responsive to the output signal of said second pass transistor circuit;
• a second bipolar transistor having a control electrode connected directly to said second electrodes of said third and fourth insulated gate transistors, a first electrode connected to said predetermined potential, and a second electrode connected to said second output terminal;
• and
• a second NMOS transistor having a drain electrode connected to said second output terminal, a source electrode connected to said second potential, and a gate electrode connected to said second electrodes of said first and second insulated gate transistors.

A semiconductor integrated circuit comprising:

• at least one pass transistor circuit including a plurality of input terminals receiving different input signals, at least one control terminal receiving a control signal, and a plurality of insulated gate transistors each having a first electrode, a second electrode and a control electrode, said first electrodes of said plurality of insulated gate transistors being connected to the corresponding input terminals, said control electrodes of said plurality of insulated gate transistors being connected to the corresponding control terminal, said pass transistor circuit being responsive to said control signal applied to said control terminal for selectively outputting one of said input signals given from said plurality of input terminals;
• at least one drive circuit including an output terminal for outputting an output signal in response to the output of said pass transistor circuit, and at least one bipolar transistor having a control electrode connected directly to all said second electrodes of said plurality of insulated gate transistors, a first electrode connected to a predetermined potential, and a second electrode connected to said output terminal;
• said predetermined potential includes a first potential and a second potential lower than said first potential;
• said at least one bipolar transistor includes a plurality of bipolar transistors;
• and
• said plurality of bipolar transistors include at least one NPN bipolar transistor having a collector electrode connected to said first potential, a base electrode connected to said second electrodes of said plurality of insulated gate transistors, and an emitter electrode connected to said output terminal, and at least one PNP bipolar transistor having a collector electrode connected to said second potential, a base electrode connected to said second electrodes of said plurality of insulated gate transistors, and an emitter electrode connected to said output terminal.

A semiconductor integrated circuit comprising:

• at least one pass transistor circuit including a plurality of input terminals receiving different input signals, at least one control terminal receiving a control signal, and a plurality of insulated gate transistors each having a first electrode, a second electrode and a control electrode, said first electrodes of said plurality of insulated gate transistors being connected to the corresponding input terminals, said control electrodes of said plurality of insulated gate transistors being connected to the corresponding control terminal, said pass transistor circuit being responsive to said control signal applied to said control terminal for selectively outputting one of said input signals given from said plurality of input terminals;
• at least one drive circuit including an output terminal for outputting an output signal in response to the output of said pass transistor circuit, and at least one bipolar transistor having a control electrode connected directly to all said second electrodes of said plurality of insulated gate transistors, a first electrode connected to a predetermined potential, and a second electrode connected to said output terminal;
• said drive circuit further includes:
• an inverter having an input connected to said second electrodes of said insulated gate transistors;
• and
• another bipolar transistor of same conductivity type as said bipolar transistor having a control electrode connected to an output of said inverter, a first electrode connected to said output terminal, and a second electrode connected to a second potential different from said predetermined potential.

A semiconductor integrated circuit comprising:

• at least one pass transistor circuit including a plurality of input terminals receiving different input signals, at least one control terminal receiving a control signal, and a plurality of insulated gate transistors each having a first electrode, a second electrode and a control electrode, said first electrodes of said plurality of insulated gate transistors being connected to the corresponding input terminals, said control electrodes of said plurality of insulated gate transistors being connected to the corresponding control terminal, said pass transistor circuit being responsive to said control signal applied to said control terminal for selectively outputting one of said input signals given from said plurality of input terminals;
• at least one drive circuit including an output terminal for outputting an output signal in response to the output of said pass transistor circuit, and at least one bipolar transistor having a control electrode connected directly to all said second electrodes of said plurality of insulated gate transistors, a first electrode connected to a predetermined potential, and a second electrode connected to said output terminal;
• and
• a second drive circuit including a second output terminal, and a bipolar transistor having a control electrode receiving a signal logically different from the output signal of said pass transistor circuit, a first electrode connected to said predetermined potential, and a second electrode connected to said second output terminal, said second drive circuit being responsive to the inputted signal for outputting an output signal logically different from the output signal of said drive circuit.

A semiconductor integrated circuit comprising:

• at least one pass transistor circuit including a plurality of input terminals receiving different input signals, at least one control terminal receiving a control signal, and a plurality of insulated gate transistors each having a first electrode, a second electrode and a control electrode, said first electrodes of said plurality of insulated gate transistors being connected to the corresponding input terminals, said control electrodes of said plurality of insulated gate transistors being connected to the corresponding control terminal, said pass transistor circuit being responsive to said control signal applied to said control terminal for selectively outputting one of said input signals given from said plurality of input terminals;
• at least one drive circuit including an output terminal for outputting an output signal in response to the output of said pass transistor circuit, and at least one bipolar transistor having a control electrode connected directly to all said second electrodes of said plurality of insulated gate transistors, a first electrode connected to a predetermined potential, and a second electrode connected to said output terminal;
• and
• said drive circuit further includes:
• a second insulated gate transistor having a first electrode connected to said predetermined potential and a second electrode connected to said control electrode of said bipolar transistor, said second insulated gate transistor turning on as said bipolar transistor turns on to set said control electrode of said bipolar transistor to said predetermined potential.

A semiconductor integrated circuit comprising:

• at least one pass transistor circuit including a plurality of input terminals receiving different input signals, at least one control terminal receiving a control signal, and a plurality of insulated gate transistors each having a first electrode, a second electrode and a control electrode, said first electrodes of said plurality of insulated gate transistors being connected to the corresponding input terminals, said control electrodes of said plurality of insulated gate transistors being connected to the corresponding control terminal, said pass transistor circuit being responsive to said control signal applied to said control terminal for selectively outputting one of said input signals given from said plurality of input terminals;
• at least one drive circuit including an output terminal for outputting an output signal in response to the output of said pass transistor circuit, and at least one bipolar transistor having a control electrode connected directly to all said second electrodes of said plurality of insulated gate transistors, a first electrode connected to a predetermined potential, and a second electrode connected to said output terminal;
• and
• said drive circuit further includes:
• a second insulated gate transistor having a first electrode connected to a second potential different from said predetermined potential and a second electrode connected to said control electrode of said bipolar transistor, said second insulated gate transistor turning on as said bipolar transistor turns off to set said control electrode of said bipolar transistor to said second potential.

A semiconductor integrated circuit comprising:

• at least one pass transistor circuit including a plurality of input terminals receiving different input signals, at least one control terminal receiving a control signal, and a plurality of insulated gate transistors each having a first electrode, a second electrode and a control electrode, said first electrodes of said plurality of insulated gate transistors being connected to the corresponding input terminals, said control electrodes of said plurality of insulated gate transistors being connected to the corresponding control terminal, said pass transistor circuit being responsive to said control signal applied to said control terminal for selectively outputting one of said input signals given from said plurality of input terminals;
• at least one drive circuit including an output terminal for outputting an output signal in response to the output of said pass transistor circuit, and at least one bipolar transistor having a control electrode connected directly to all said second electrodes of said plurality of insulated gate transistors, a first electrode connected to a predetermined potential, and a second electrode connected to said output terminal;
• and
• said drive circuit further includes:
• a second insulated gate transistor having a first electrode connected to said control electrode of said bipolar transistor, a control electrode connected to said predetermined potential, and a second electrode connected to said second electrode of said bipolar transistor.

A semiconductor integrated circuit comprising:

• at least one pass transistor circuit including a plurality of input terminals receiving different input signals, at least one control terminal receiving a control signal, and a plurality of insulated gate transistors each having a first electrode, a second electrode and a control electrode, said first electrodes of said plurality of insulated gate transistors being connected to the corresponding input terminals, said control electrodes of said plurality of insulated gate transistors being connected to the corresponding control terminal, said pass transistor circuit being responsive to said control signal applied to said control terminal for selectively outputting one of said input signals given from said plurality of input terminals;
• at least one drive circuit including an output terminal for outputting an output signal in response to the output of said pass transistor circuit, and at least one bipolar transistor having a control electrode connected directly to all said second electrodes of said plurality of insulated gate transistors, a first electrode connected to a predetermined potential, and a second electrode connected to said output terminal;
• said drive circuit further including:
• voltage drop means having a first end connected to said control electrode of said bipolar transistor and a second end connected to said second electrode of said bipolar transistor;
• said at least one bipolar transistor includes a plurality of bipolar transistors;
• and
• said plurality of bipolar transistors include at least one NPN bipolar transistor having a collector electrode connected to said predetermined potential, a base electrode connected to said second electrodes of said insulated gate transistors, and an emitter electrode connected to said output terminal, and at least one PNP bipolar transistor having a collector electrode connected to a second potential lower than said predetermined potential, a base electrode connected to said second electrodes of said insulated gate transistors, and an emitter electrode connected to said output terminal.

A semiconductor integrated circuit comprising:

• at least one pass transistor circuit including a plurality of input terminals receiving different input signals, at least one control terminal receiving a control signal, and a plurality of insulated gate transistors each having a first electrode, a second electrode and a control electrode, said first electrodes of said plurality of insulated gate transistors being connected to the corresponding input terminals, said control electrodes of said plurality of insulated gate transistors being connected to the corresponding control terminal, said pass transistor circuit being responsive to said control signal applied to said control terminal for selectively outputting one of said input signals given from said plurality of input terminals;
• at least one drive circuit including an output terminal for outputting an output signal in response to the output of said pass transistor circuit, and at least one bipolar transistor having a control electrode connected directly to all said second electrodes of said plurality of insulated gate transistors, a first electrode connected to a predetermined potential, and a second electrode connected to said output terminals;
• said drive circuit further including:
• voltage drop means having a first end connected to said control electrode of said bipolar transistor and a second end connected to said second electrode of said bipolar transistor;
• said drive circuit further includes:
• an inverter having an input connected to said second electrodes of said insulated gate transistors;
• and
• a second bipolar transistor of the same conductivity type as said bipolar transistor having a control electrode connected to an output of said inverter, a first electrode connected to said output terminal, and a second electrode connected to a second potential different from said predetermined potential.