Signal transmission circuit, data transfer control device and electronic device

摘要

A signal transmission circuit transmitting signals via first and second signal lines that provide a differential pair, includes: a current source installed between a first power source and a given node; a first switching element installed between the first signal line and the node; a second switching element installed between the second signal line and the node; a current control circuit varying a value of a current that flows from the constant current circuit, wherein the first and second signal lines are operated by the current from the constant current circuit via the first and second switching elements, the current being varied by the current control circuit.