  A serializer ASIC and a VCSEL driver ASIC are needed for the front-end
optical data transmission in the ATLAS liquid argon calorimeter readout phase-I
upgrade. The baseline ASICs are the serializer LOCx2 and the VCSEL driver
LOCld, designed in a 0.25-{\mu}m Silicon-on-Sapphire (SoS) CMOS technology and
consumed 843 mW and 320 mW, respectively. Based on a 130-nm CMOS technology, we
design two pin-to-pin-compatible backup ASICs, LOCx2-130 and LOCld-130. Their
power consumptions are much lower then of their counterparts, whereas other
performance, such as the latency, data rate, and radiation tolerance, meet the
phase-I upgrade requirements. We present the design of LOCx2-130 and LOCld-130.
The test results of LOCx2-130 are also presented.
