This paper introduces a fully-integrated wireline transmitter operating at 40Gb/s. The transmitter incorporates a combiner of 64:1 MUX and 2-tap Feed-Forward-Equalizer (FFE). The transmitter is achieved in 65nm CMOS technology. The simulation results show that the proposed transmitter can work at 40Gb/s with a -11dB RLGC channel. The simulation power consumption is 76 mW under 1.08V supply, and the core area is 0.217 mm2.