A transmitter circuit includes: a driver that includes an output resistor set to a resistance value according to an input code, and that outputs, to an output terminal, an output signal; and a high potential side resistor and a low potential side resistor that are connected to the output terminal. The transmitter circuit further includes a high potential side current source that is set with a current value according to the input code, and a low potential side current source that is set with a current value according to the input code. The transmitter circuit further includes a high potential side switch and a low potential side switch that switch between allowing current output from the high voltage side current source and the low voltage side current source to pass, and blocking the current.