A semiconductor integrated circuit according to an embodiment includes: an output circuit configured to cause a current to flow out from an output terminal to a control target or cause a current to flow in from the control target via the output terminal, based on a control signal; a current source portion provided for the output circuit and configured to be capable of switching a current suppliable to the output terminal; and an adjustment circuit configured to switch a current that the current source portion is caused to generate, based on the control signal.