Electostatic discharge protection circuit

Details Electostatic discharge protection circuit Electostatic discharge protection circuit

1990-05-08

1992-02-04

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Impedance insertion

361 56, 361 90, 361 86, 361111, 357 2313, H02H 324

Patent

active

050863657

ABSTRACT:
For electrostatic-discharge-protection, a first transistor is configured with the transistor channel connected between circuit ground and an associated (input or output) pad. In addition, transistors(s) are included configured to "float" the gate and/or the well of the first transistor when no power supply potential (Vcc) is present and to couple to circuit ground (or the power supply potential) the gate and/or the well of the first transistor when the normal power supply potential (Vcc) is present.

REFERENCES:
patent: 3746946 (1973-07-01), Clark
patent: 4385337 (1983-05-01), Asano et al.

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