EXCLUSIVE OR GATE CIRCUIT

摘要

PURPOSE: An exclusive OR gate circuit is provided to improve operation stability by supplying a bias voltage to the bulk terminal of a MOS transistor. CONSTITUTION: A computation unit(10a) comprises a plurality of MOS transistors. The computation unit performs an exclusive OR operation for a first and a second input signal. A bias supply unit(20a) supplies a bias voltage to the bulk terminal of a NMOS transistor with a source terminal which is not grounded among MOS transistors of the computation unit. The computation unit comprises a first PMOS transistor, a second PMOS transistor, a first NMOS transistor, a second NMOS transistor, a third PMOS transistor and a third NMOS transistor.