| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a level converter that decides an initial value of a latch circuit and implements satisfactory symmetry of rise/fall characteristics of an output signal. <P>SOLUTION: Initial value setting MOS transistors Tp3, Tp4 are inserted between nodes N1, N2 as output terminals and transistors Tp1, Tp2 of first and second inverter circuits 32, 33 constituting a latch circuit 31 of a shift circuit 12. A gate of the MOS transistor Tp3 is connected to a grounded, and a gate of the MOS transistor Tp4 is connected to an initial value setting circuit 34. The initial value setting circuit 34 controls the gate potential of the MOS transistor Tp4 at an intermediate potential between a second high potential power supply VDE and the ground when the second high potential power supply VDE is a predetermined level or lower, and controls the gate potential at the ground level to turn on the MOS transistor Tp4 when the second high potential power supply VDE is higher than the predetermined level. <P>COPYRIGHT: (C)2012,JPO&INPIT |
