| 摘要 |
<p>The invention provides for an ESD protection system that makes use of several different types of over-voltage protection devices and provides ESD conduction paths between different power lines. The system may employ shunt diodes (28, 30) between the ground lines (20, 22, 24) of the different power supplies and between IC pads and power supply lines; SCR protection (32) between IC pads (26) and ground (22); and thick field device protection (90, 92) between different power supply VDD lines. In this way, a conduction path for an ESD event between two circuit elements may be implemented using the device whose switching characteristics are best suited to that application. <IMAGE></p> |
