Semiconductor integrated circuit

Details Semiconductor integrated circuit Semiconductor integrated circuit

2006-08-22

2006-08-22

Vo, Tuyet (Department: 2821)

Electronic digital logic circuitry

Interface

Supply voltage level shifting

C326S080000

Reexamination Certificate

active

07095249

ABSTRACT:
A semiconductor integrated circuit includes a first controlling circuit section, a level transforming circuit, a first buffer circuit, a second buffer circuit, and an overvoltage protecting circuit. A first n-channel type MOS transistor is provided in the first buffer circuit and a second p-channel type MOS transistor is provided in the second buffer circuit. Thus, faster operation can be obtained, and voltage between the source and drain of a third p-channel type MOS transistor and a third n-channel type MOS transistor of the overvoltage protecting circuit, impressed when output signal OUT changes, can be decreased.

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