Semiconductor integrated circuit and layout apparatus in which g

Details Semiconductor integrated circuit and layout apparatus in which g Semiconductor integrated circuit and layout apparatus in which g

1998-08-18

2000-06-20

Whitehead, Jr., Carl

Active solid-state devices (e.g., transistors, solid-state diode

Field effect device

Having insulated electrode

257355, 257357, 257358, 257339, 257372, 257396, 257394, 257127, 257452, 257484, 257490, H01L 2362, H01L 2976, H01L 2994

Patent

active

060780851

ABSTRACT:
A semiconductor integrated circuit is made up of a plurality of input-output circuit portions which are aligned at irregular intervals between a core portion and an external portion, a first guard-ring which is formed in the respective input-output circuit portions, and a second guard-ring which is formed between the respective input-output circuit portions. Accordingly, the semiconductor integrated circuit can prevent latch-up between the respective input-output circuit portions without changing the layout of the respective input-output circuit portions.

REFERENCES:
patent: 5780887 (1998-07-01), Nakagawa et al.
patent: 5828109 (1998-10-01), Okamoto
H.B. Bakoglu, "Circuits, Interconnections and Package for VLSI" with English Translation.

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