The transmitter consists of MAX3890(synthesizer and clock generator)and MAX3867(laser driver).The total random jitter is only 3.4 psRMS. MAX3890 can provide a 2.5 Gbps colck to the input lock of MAX3867 for the second timing of the data signal, and it makes MAX3867 to be the only systematic jitter source. Its typical systematic jitter is no more than 50psRMS. The receiver consists of MAX3866(TIA),MAX3875(restoring circuit of clock and data)and MAX3885(resolver). Its total random jitter is only 4.6 psRMS, and the systematic jitter is about 20 psRMS. This chip group has large design abundance as to the 2.5 Gbps SDH/SONET jitter standard of ITU/Bellcore.