Accession Number : ADA319534

Title :   Low-Power High-Speed Dynamic Logic Families for Complementary Gallium Arsenide (CGaAs) Fabrication Processes.

Descriptive Note : Doctoral thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Shehata, Khaled Ali

PDF Url : ADA319534

Report Date : SEP 1996

Pagination or Media Count : 281

Abstract : The design and evaluation of several different low-power, high-speed, high-density complementary gallium arsenide (CGaAs) dynamic logic families that are compatible with existing CGaAs fabrication processes and design tools are documented. Circuits studied include Domino logic, N-P Domino logic and Two-Phase Dynamic FET Logic (TPDL). The TPDL circuits have been implemented and fabricated. The dynamic circuits are evaluated and compared with typical static logic circuits for speed, power consumption and layout area. Dynamic circuits are non-ratioed logic. Therefore, the transistor sizes can be minimized to reduce the layout area and the power dissipation of the circuits. Furthermore, dynamic circuits are faster than static circuits because they do not use PFETs for evaluation, only for precharging. Dynamic circuits consume less power than the static circuits because they have no short-circuit current and a reduced leakage current (only switching current flows in the dynamic circuits). This means that CGaAs dynamic logic circuits have higher speed than Directly-Coupled FET Logic (DCFL) and lower power consumption than complementary GaAs logic.

Descriptors :   *LOW POWER, *DYNAMICS, *HIGH VELOCITY, *GALLIUM ARSENIDES, *FABRICATION, *LOGIC CIRCUITS, THESES, DISSIPATION, FIELD EFFECT TRANSISTORS, SEMICONDUCTORS, REDUCTION, SILICON, HIGH DENSITY, FUEL CONSUMPTION, POWER, FLOW, SHORT CIRCUITS, ELECTRIC CURRENT, LEAKAGE(ELECTRICAL), LOGIC, STATICS, SWITCHING, LOW RATE, ENERGY CONSUMPTION, TWO PHASE FLOW.

Subject Categories : Inorganic Chemistry
      Electrooptical and Optoelectronic Devices
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE