Title :
Interdigitated I/sup 2/L structures
Author :
Elmasry, M.I. ; Heasell, E.L.
Abstract :
The isolation of I/SUP 2/L structures in a conventional bipolar LSI technology is provided by a shallow or a deep n/SUP +/ collar. If part of this collar is replaced with an injector, an interdigitated I/SUP 2/L structure results. The structure has less delay at intermediate current levels compared to the conventional I/SUP 2/L layout. The reduction in delay is significant if the replaced collar is a shallow n/SUP +/. This improved performance is obtained at the expense of packing density. This correspondence presents the structure and analyzes its performance.
Keywords :
Bipolar integrated circuits; Integrated logic circuits; Large scale integration; bipolar integrated circuits; integrated logic circuits; large scale integration; CMOS logic circuits; Delay effects; Integrated circuit modeling; Large scale integration; Logic circuits; Logic design; Logic devices; Solid modeling; Solid state circuits; Watches;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.1978.1052071
