| 摘要 |
A transient voltage occurring between output terminals during ON/OFF operation is reduced. There are provided a pair of input terminals IN1 and IN2, a pair of output terminals OUT1 and OUT2, MOSFETs N1 and N2 connected between the output terminals, and a drive circuit 10 connected between the input terminals IN1 and IN2 and the MOSFETs N1 and N2. A light-emitting diode D1 is connected between the input terminals IN1 and IN2. The MOSFETs N1 and N2 have their source electrodes electrically connected to each other and their drains connected to the output terminals OUT1 and OUT2 respectively. The drive circuit 10 includes a photodiode array FD1 that supplies a drive voltage to the gates of the MOSFETs N1 and N2, and a discharge circuit 11, connected between the gate electrodes and the source electrodes of the MOSFETs N1 and N2, that discharges electric charges accumulated on each gate electrode.
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