Title:
INPUT PROTECTIVE CIRCUIT
Document Type and Number:
Japanese Patent JP3434747
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To lower the trigger voltage of the snap back of an n-type MOSFET used in an input protective circuit without breaking a protective element itself.
SOLUTION: An input protective circuit is provided with an n-type MOSFET 1 the drain D of which is connected to an input terminal Vin for an internal element, and the source S of which is connected to a ground GND together with a substrate B and a first diode row 2 which are successively connected in series between the input terminal Vin and ground GND. In addition, the gate G of the MOSFET 1 is connected to a junction N1 which divides the first diode row 2 into tow parts.
Inventors:
Gaku Ando
Application Number:
JP25355599A
Publication Date:
August 11, 2003
Filing Date:
September 07, 1999
Export Citation:
Assignee:
NEC Electronics Corporation
International Classes:
H01L27/04; H01L21/822; (IPC1-7): H01L21/822; H01L27/04
Domestic Patent References:
| JP1074893A | ||||
| JP10209292A | ||||
| JP10335947A | ||||
| JP8172188A | ||||
| JP4271165A | ||||
| JP3280569A |
Attorney, Agent or Firm:
Yukio Nishimura