Title :
Performance of carry lookahead generator circuit fabricated with gallium arsenide
Author :
Sato, R.N. ; Sokolich, M. ; Le, H.M. ; Yang, H.Y. ; Levy, H.M. ; Worley, E.R.
fDate :
2/1/1987 12:00:00 AM
Abstract :
A high-performance 4-bit carry lookahead generator macrocell integrated circuit similar to the commercial 2902, a member of the 2900-family microprocessor chip set, was designed and built using direct-coupled FET logic (DCFL) and buffered FET logic (BFL) GaAs technologies. The following propagation delay times and power dissipations were measured: DCFL version -T/SUB pd/=1.55 ns, P=34 mW; BFL version-T/SUB pd/=1.10 ns, P=520 mW. In contrast, the commercially available bipolar 2902 has a propagation delay (room temperature typical) of 4.5 ns with an average power dissipation of 260 mW.
Keywords :
Carry logic; Field effect integrated circuits; Gallium arsenide; III-V semiconductors; Integrated logic circuits; carry logic; field effect integrated circuits; gallium arsenide; integrated logic circuits; FET integrated circuits; Gallium arsenide; Integrated circuit technology; Logic circuits; Logic design; Macrocell networks; Microprocessor chips; Power dissipation; Power measurement; Propagation delay;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.1987.1052685
