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US 2014/0210053 A1Published application
Bi-directional esd protection circuit
AssigneeTexas Instruments Incorporated
InventorsROBERT STEINHOFF, Jonathan Brodsky
Life of this patent
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Abstract
A structure is designed with an external terminal (100) and a reference terminal (102). A first transistor (106) is formed on a substrate. The first transistor has a current path coupled between the external terminal and the reference terminal. A second transistor (118) has a current path coupled between the external terminal and the substrate. A third transistor (120) has a current path coupled between the substrate and the reference terminal.
Claims26
1-20. (canceled)
A circuit, comprising:
- a first terminal;
- a second terminal;
- a third terminal;
- a device having a current path coupled between the first and second terminals;
- a first transistor having a current path coupled between the first terminal and the third terminal and having a control terminal coupled to the second terminal;
- and
- a second transistor having a current path coupled between the second terminal and the third terminal and having a control terminal coupled to the first terminal.
4 more elements
A circuit, comprising:
- a first terminal;
- a second terminal;
- a third terminal;
- a first device having a current path coupled between the first and second terminals;
- a second device having a current path coupled between the first terminal and the third terminal, the second device current path not conducting in response to a positive voltage at the first terminal with respect to the second terminal and conducting in response to the positive voltage at the second terminal with respect to the first terminal;
- and
- a third device having a current path coupled between the second terminal and the third terminal, the third device current path conducting in response to the positive voltage at the first terminal with respect to the second terminal and not conducting in response to the positive voltage at the second terminal with respect to the first terminal.
4 more elements
Dependencies are inferred from the claim text.