Transmitting devices that provide transmission signals having enlarged data eyes

A transmitting device, comprising:

• an output node;
• an output driver comprising a plurality of driver circuits that drive a plurality of multi-level signals onto the output node, wherein the plurality of multi-level signals are driven based on a plurality of driver control signals and drive signals for driving the plurality of driver circuits based on the plurality of driver control signals, respectively;
• and
• a logic circuit configured to detect a direction of a pull-up or pull-down operation of each of the plurality of driver circuits by transitions of the plurality of driver control signals and generate the drive signals;
• and
• wherein, in response to detecting the direction of the pull-up or the pull-down operation of each of the plurality of driver circuits, the logic circuit provides a first drive signal from among the drive signals to at least one static driver circuit corresponding to a driver control signal that does not transition having a first logic value, from among the plurality of driver circuits;
• and
• wherein the first drive signal has a second logic value different from the first logic value during a pulse period and has the first logic value after a lapse of the pulse period.