| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce a minimum power source voltage of a current switch type D-FF to 1 V or less without sacrificing a rapidity and to commonly use the power source voltage for a radio section and a base band section of a low voltage operation. SOLUTION: A semiconductor integrated circuit comprises various type elements formed on an SOI substrate to constitute a current switching type D-FF. The integrated circuit further comprises a MOS transistor M1 connected at its drain to a node M and at its source to a node E1, input at its gate with a signal D, and input at its body with a clock CK; a MOS transistor M2 connected at its drain to a node MN and at its source to a node E1, input at its gate with a complementary signal DN of the signal D, and input at its body with a clock CK; a resistance element R1 connected between a power source end VDD and the node M; a resistance element R2 connected between the end VDD and the node MN; and a constant-current source I1 connected between the node E1 and a ground terminal VSS.</p> |
