Patent ID: 7512164
Filing Date: 2009-03-31
Classification: H04B

Abstract:
1. An optical transceiver, comprising: a laser element; and a laser driver IC comprising: wherein one of outputs of the fault signal processing section is connected to a fault signal output terminal linked to outside the laser driver IC; a resistance component is configured to be selectively attached to/detached from between the fault signal output terminal of the laser driver IC and ground provided outside the laser driver IC; an input terminal of an inverter is connected to the fault signal output terminal; and an output terminal of the inverter is connected to an external fault signal output terminal linked to outside the optical transceiver, wherein one of the selectively attaching/detaching the resistance component allows the disable signal to be generated and another of the selectively attaching/detaching the resistance component prevents the disable signal from being generated, and wherein when the resistance component is selectively detached from between the fault signal output terminal of the laser driver IC and ground provided outside the laser driver IC, a potential of the fault signal output terminal is equal to a portion of an internal power supply.