A transmission device, comprising: a generator unit (20, 30, 40A) that is configured to generate, on a basis of a control signal (Smode), a transmission symbol signal (Tx1, Tx2, Tx3) that indicates a sequence of transmission symbols, the transmission symbol signal being formed by a set of three signals; an output control unit that is configured to generate an output control signal (PUO, PD0, PU1, PD1, PU2, PD2) on a basis of the transmission symbol signal (Tx1, Tx2, Tx3), the output control signal being formed by a set of six signals; and a driver unit (150, 151, 152, 160, 161, 162) that is configured to generate, on a basis of the output control signal (PUO, PD0, PU1, PD1, PU2, PD2), a first output signal, a second output signal, and a third output signal each output signal making transitions among three voltage levels, the generator unit (20, 30, 40A) includes a processor unit that is configured to generate the transmission symbol signal (Tx1, Tx2, Tx3) on a basis of a first symbol signal (Tx01, Tx02, Tx03) and on the basis of the control signal (Smode), the first symbol signal (Tx01, Tx02, Tx03) being formed by a set of three signals, and wherein the generator unit (20, 30, 40A) is configured to perform, on the basis of the control signal (Smode), rearrangement of the three signals included in the first symbol signal (Tx01, Tx02, Tx03), or rearrangement of inverted signals of the three signals included in the first symbol signal (Tx01, Tx02, Tx03), to generate the transmission symbol signal (Tx1, Tx2, Tx3), wherein the generator unit (20, 30, 40A) further includes a serializer unit (11, 12, 13) that is configured to serialize a predetermined number of second symbol signals (Tx10-Tx16; Tx20-Tx26; Tx30-Tx36), to generate the first symbol signal (Tx01, Tx02, Tx03), each second symbol signal being formed by a set of three signals. a generator unit (20, 30, 40A) that is configured to generate, on a basis of a control signal (Smode), a transmission symbol signal (Tx1, Tx2, Tx3) that indicates a sequence of transmission symbols, the transmission symbol signal being formed by a set of three signals; an output control unit that is configured to generate an output control signal (PUO, PD0, PU1, PD1, PU2, PD2) on a basis of the transmission symbol signal (Tx1, Tx2, Tx3), the output control signal being formed by a set of six signals; and a driver unit (150, 151, 152, 160, 161, 162) that is configured to generate, on a basis of the output control signal (PUO, PD0, PU1, PD1, PU2, PD2), a first output signal, a second output signal, and a third output signal each output signal making transitions among three voltage levels, the generator unit (20, 30, 40A) includes a processor unit that is configured to generate the transmission symbol signal (Tx1, Tx2, Tx3) on a basis of a first symbol signal (Tx01, Tx02, Tx03) and on the basis of the control signal (Smode), the first symbol signal (Tx01, Tx02, Tx03) being formed by a set of three signals, and wherein the generator unit (20, 30, 40A) is configured to perform, on the basis of the control signal (Smode), rearrangement of the three signals included in the first symbol signal (Tx01, Tx02, Tx03), or rearrangement of inverted signals of the three signals included in the first symbol signal (Tx01, Tx02, Tx03), to generate the transmission symbol signal (Tx1, Tx2, Tx3), wherein the generator unit (20, 30, 40A) further includes a serializer unit (11, 12, 13) that is configured to serialize a predetermined number of second symbol signals (Tx10-Tx16; Tx20-Tx26; Tx30-Tx36), to generate the first symbol signal (Tx01, Tx02, Tx03), each second symbol signal being formed by a set of three signals.