A transmission line interface circuit comprising: multiple driver elements, including a p-type driver element coupled between a transmission line and a high voltage reference for the transmission line interface circuit, configured to pull up a voltage level of the transmission line in response to a logic high value of an input signal to be driven on the transmission line, wherein the transmission line couples the transmission line interface circuit to a remote device; and an n-type driver element coupled between the transmission line and a low voltage reference for the transmission line interface circuit, configured to pull down the voltage level of the transmission line in response to a logic low value of the input signal; a voltage regulator (362, 364) coupled locally in the transmission line interface circuit between one of the p-type and n-type driver elements (342, 344) and a respective voltage reference (VDD, VSS) of the high voltage reference and the low voltage reference wherein the voltage regulator is configured to reduce a voltage swing of the transmission line interface circuit; and characterized in that the transmission line interface circuit further comprises a bypass path coupled between the respective voltage reference (VDD, VSS) and said one of the p-type and n-type driver elements (342, 344), parallel to the voltage regulator (362, 364, 366), said bypass path configured to bypass the voltage regulator (362, 364) by connecting said one of the p-type and n-type driver elements (342, 344) to said respective voltage reference (VDD, VSS) when the transmission line interface circuit is receiving a signal on the transmission line from said remote device. multiple driver elements, including a p-type driver element coupled between a transmission line and a high voltage reference for the transmission line interface circuit, configured to pull up a voltage level of the transmission line in response to a logic high value of an input signal to be driven on the transmission line, wherein the transmission line couples the transmission line interface circuit to a remote device; and an n-type driver element coupled between the transmission line and a low voltage reference for the transmission line interface circuit, configured to pull down the voltage level of the transmission line in response to a logic low value of the input signal; a p-type driver element coupled between a transmission line and a high voltage reference for the transmission line interface circuit, configured to pull up a voltage level of the transmission line in response to a logic high value of an input signal to be driven on the transmission line, wherein the transmission line couples the transmission line interface circuit to a remote device; and an n-type driver element coupled between the transmission line and a low voltage reference for the transmission line interface circuit, configured to pull down the voltage level of the transmission line in response to a logic low value of the input signal; a voltage regulator (362, 364) coupled locally in the transmission line interface circuit between one of the p-type and n-type driver elements (342, 344) and a respective voltage reference (VDD, VSS) of the high voltage reference and the low voltage reference wherein the voltage regulator is configured to reduce a voltage swing of the transmission line interface circuit; and characterized in that the transmission line interface circuit further comprises a bypass path coupled between the respective voltage reference (VDD, VSS) and said one of the p-type and n-type driver elements (342, 344), parallel to the voltage regulator (362, 364, 366), said bypass path configured to bypass the voltage regulator (362, 364) by connecting said one of the p-type and n-type driver elements (342, 344) to said respective voltage reference (VDD, VSS) when the transmission line interface circuit is receiving a signal on the transmission line from said remote device.