A 165-Gb/s 4:1 multiplexer in InP DHBT technology

This paper presents a 4:1 multiplexer fabricated in InP DHBT technology. The multiplexer works up to 165 Gb/s. At 165 Gb/s, the chip operates at -3.2 V supply voltage and consumes 1.6 W. It is a half-rate multiplexer using a multi-phase clock architecture. The main design challenges were timing margins between clock and data.