| 摘要 |
Hysteresis circuit 10 is composed of three inverters 40, 42, 44. Node N<SUB>B </SUB>in hysteresis circuit 10 is connected to the input terminal of transition-detecting part 14 of transmission control part 12. Transition-detecting part 14 detects the timing of the start of the output inversion operation and the timing of the completion of the transition in hysteresis circuit 10 corresponding to potential V<SUB>B </SUB>of node N<SUB>B</SUB>, and it controls activation/deactivation of inverter 50 on the signal transmission path.
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