DocumentCode
1055945
Title
The effect of collector location on βu of I2L structures
Author
Rofail, Samir S. ; Elmasry, Mohamed I.
Author_Institution
University of Waterloo, Ont., Canada
Volume
24
Issue
3
fYear
1977
fDate
3/1/1977 12:00:00 AM
Firstpage
289
Lastpage
291
Abstract
I2L multicollector n-p-n transistor structures are used widely in LSI chips. Due to layout restrictions the collector could be at a distance from the injector. In this case, βu per collector is affected by the lateral voltage drop in the base. This effect becomes significant at higher current levels. In this work the lateral base region of the n-p-n transistor is modeled and a scheme is given to obtain the variation of βu with the base current. The results are compared to measurements obtained using a three-collector structure.
Keywords
Electric resistance; Equations; Error correction; Flip-flops; Large scale integration; Logic devices; Logic functions; Region 1; Region 2; Voltage;
fLanguage
English
Journal_Title
Electron Devices, IEEE Transactions on
Publisher
ieee
ISSN
0018-9383
Type
jour
DOI
10.1109/T-ED.1977.18729
Filename
1478921
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