Semiconductor integrated circuit device including electrostatic protection circuit accommodating drive by plurality of power supplies and effectively removing various types of surge
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Mar 27, 2001
Grant Date -
N/A
app pub date -
Feb 2, 1999
filing date -
Apr 20, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
According to a structure in which each transistor of an output buffer transistor group of a gate array structure is electrically isolated, each body potential is set independent Also, a diode-connected transistor is provided between power supplies. An element not used in the output buffer transistor group can be connected without short-circuiting power supply lines between independent power supply lines to form an electrostatic protection circuit that is efficient in layout.
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