Finfet based driver circuit
Disclosed herein is a driver circuit including a first group of transistors provided between first and second nodes and including n of the transistor(s) where n is equal to or greater than one, and a second group of transistors provided in parallel with the first group of transistors and including m of the transistor(s) where m is equal to or greater than one and not equal to n, the m transistors being connected together in series. The n-channel transistor in the first group and at least one of the two n-channel transistors in the second group have their gate connected to an input node.
1. A semiconductor integrated circuit device having a plurality of semiconductor integrated circuits which include a first semiconductor integrated circuit, the first semiconductor integrated circuit being connected to an input node and first and second nodes, wherein
the first semiconductor integrated circuit has a plurality of transistors, each of which has a first channel conductivity type and which are configured as fin transistors having the same gate length and the same gate width, the plurality of transistors comprising:
a first group of transistors provided between the first and second nodes and including n of the transistor(s) where n is an integer equal to or greater than one, the n transistors being connected together in series; and
a second group of transistors provided between the first and second nodes in parallel with the first group of transistors and including m of the transistor(s) where m is an integer equal to or greater than one and not equal to n, the m transistors being connected together in series,
the semiconductor integrated circuit device further having a control transistor whose source or drain is connected to the first or second node and which is connected in series to the first semiconductor integrated circuit,
all of the n transistor(s) in the first group and all of the m transistor(s) in the second group have their gate connected to the input node,
the control transistor is supplied, at its gate, with a mode control signal controlling ON/OFF states of the control transistor.
2. The semiconductor integrated circuit device of claim 1 , wherein the plurality of transistors further comprises a third group of transistors provided in parallel with the first group of transistors between the first and second nodes and including n of the transistors connected together in series.
3. The semiconductor integrated circuit device of claim 1 , wherein the second group of transistors further includes, in addition to the m transistors where m is equal to or greater than two, another transistor of the first channel conductivity type connected in parallel with some of the m transistors.
4. The semiconductor integrated circuit device of claim 1 , wherein the second group of transistors further includes a precharge transistor connected to at least one of intermediate nodes connecting together associated ones of the m transistors where m is equal to or greater than two, and configured to precharge the at least one of the intermediate nodes to a predetermined voltage when the at least one of the m transistor(s) having their gate connected to the input node is in OFF state.
5. The semiconductor integrated circuit device of claim 1 , wherein in the second group of transistors, a constant voltage power supply or the first or second node is connected to at least one of intermediate nodes connecting together associated ones of the m transistors where m is equal to or greater than two.
6. The semiconductor integrated circuit device of claim 1 , wherein the plurality of the semiconductor integrated circuits form a fundamental gate.
7. The semiconductor integrated circuit device of claim 1 , wherein the first semiconductor integrated circuit includes a plurality of the first semiconductor integrated circuits having respectively different configurations.