Electrostatic discharge protection circuit for recording electro

Details Electrostatic discharge protection circuit for recording electro Electrostatic discharge protection circuit for recording electro

1998-06-08

1999-11-30

Jackson, Stephen W

Electricity: electrical systems and devices

Safety and protection of systems and devices

Transient responsive

361 56, 361118, 361127, H02H 300

Patent

active

059953543

ABSTRACT:
An electrostatic discharge protection circuit is used to protect an internal circuit that is electrically connected to an integrated circuit pad. The electrostatic discharge protection circuit comprises an erasable programmable read only memory, a capacitor, and a load element. The erasable programmable read only memory is provided with one source/drain connected to the pad, another source/drain connected to a power node, and a control gate. The capacitor is connected between the control gate and the pad while the load element is connected between the control gate and the power node. When electrostatic discharge stress occurs to the pad, the erasable programmable read only memory enters breakdown and is programmed by means of coupling effect through the capacitor. Under normal operation, the erasable read only memory is turned off via the load element.

REFERENCES:
patent: 5173755 (1992-12-01), Co et al.
patent: 5400202 (1995-03-01), Metz et al.
patent: 5717558 (1998-02-01), Lynn et al.

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