Buffer circuit having electrostatic discharge protection

Details Buffer circuit having electrostatic discharge protection Buffer circuit having electrostatic discharge protection

2007-09-18

2007-09-18

Tra, Quan (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C327S437000, C327S576000, C361S056000

Reexamination Certificate

active

10986771

ABSTRACT:
The buffer circuit includes pull up and pull down circuits configured to selectively pull up and pull down, respectively, a voltage of an put/output pad. The pull up and pull down circuits are connected to separate power supply lines such that a current path from the input/output pad to the pull down circuit through the pull up circuit does not exist when electrostatic discharge is received at the input/output pad.

REFERENCES:
patent: 5793588 (1998-08-01), Jeong
patent: 6300800 (2001-10-01), Schmitt et al.
patent: 6327126 (2001-12-01), Miller et al.
patent: 6552583 (2003-04-01), Kwong
patent: 2006/0189189 (2006-08-01), Jeon

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