| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a communication driver circuit capable of more reliably preventing changes in signal levels of a communication line even when external noise invades. <P>SOLUTION: In a communication driver section 11, when noise is applied to a signal bus 17, a signal level change prevention circuit 14 operates so that an output signal of a reversion amplification circuit 13 with an output stage of open collector type is prevented from changing to the low level side. <P>COPYRIGHT: (C)2012,JPO&INPIT |
