Title :
A 40-GHz D-type flip-flop using AlGaAs/GaAs HBT´s
Author :
Kuriyama, Y. ; Sugiyama, T. ; Hongo, S. ; Akagi, J. ; Tsuda, K. ; Iizuka, N. ; Obara, M.
Author_Institution :
Mater. & Devices Lab., Toshiba Res. & Dev. Center, Kawasaki, Japan
fDate :
10/1/1995 12:00:00 AM
Abstract :
We report master-slave D-type flip-flop (D-FF) circuit implemented with AlGaAs/GaAs HBT´s. The fabricated HBT´s had an fT of 107 GHz and an fmax of 110 GHz. To maximize the speed, the logic swing and transistor size in the IC were optimized. In the D-FF, to facilitate the high-speed testing, a selector circuit was integrated on the same chip. As a result, the operation of this IC was confirmed up to 40 GHz, which is the highest speed in D-FF
Keywords :
III-V semiconductors; aluminium compounds; bipolar logic circuits; design for testability; flip-flops; gallium arsenide; heterojunction bipolar transistors; integrated circuit testing; logic testing; 107 GHz; 110 GHz; 40 GHz; AlGaAs-GaAs; D-type flip-flop; HBT IC; high-speed testing; master-slave flip-flop; selector circuit; Bipolar transistors; Circuit testing; Clocks; Doping; Flip-flops; Gallium arsenide; Heterojunction bipolar transistors; Master-slave; Switches; Voltage;
Journal_Title :
Solid-State Circuits, IEEE Journal of
