Claims
- 1. A voltage level converter circuit, comprising:an output node; a first node having a first voltage; a first transistor of a first conductivity type, connected between said output node and said first node, and turned on when an input voltage having a first logic level is supplied to a gate thereof; a second node having a second voltage; a second transistor of the first conductivity type connected between said output node and said second node, and turned on when said input voltage attains a second logic level; a third transistor of the first conductivity type connected between a gate of said second transistor and said second node; a fourth transistor of the first conductivity type connected between a gate of said third transistor and said second node, and having a gate connected to a gate of said second transistor; a fifth transistor of the first conductivity type connected between a gate of said first transistor and a drain of said fourth transistor, and having a gate. supplied with a control signal according to a level of a second voltage; a sixth transistor of a second conductivity type connected between a gate of said fifth transistor and a gate of said third transistor, and having a gate connected to a gate of said second transistor; and a seventh transistor of the second conductivity type connected between a gate of said fifth transistor and a gate of said fourth transistor, and having a gate connected to a gate of said third transistor.
- 2. The voltage level converter circuit according to claim 1, further comprising level determination means for comparing an absolute value of said second voltage with an absolute value of a reference voltage, and providing said control signal of a second logic level when the absolute value of said second voltage is smaller than the absolute value of said reference voltage, and providing said control signal of a first logic level when the absolute value of said second voltage is larger than the absolute value of said reference voltage.
- 3. The voltage level converter circuit according to claim 2, wherein said first voltage is a ground voltage, and said first conductivity type is an N channel MOS type.
- 4. The voltage level converter circuit according to claim 1, wherein said first voltage is a ground voltage, and said first conductivity type is an N channel MOS type.
Priority Claims (1)
Number |
Date |
Country |
Kind |
9-251860 |
Sep 1997 |
JP |
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CROSS REFERENCE TO RELATED APPLICATION
This application is a divisional of application Ser. No. 09/045,568 filed Mar. 23, 1998 now U.S. Pat. No. 6,049,243.
This application is related to application Ser. No. 08/716,846, filed Sep. 10, 1996, now U.S. Pat. No. 5,872,476 commonly assigned with the present application.
US Referenced Citations (10)
Foreign Referenced Citations (1)
Number |
Date |
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5-136685 |
Jun 1993 |
JP |