Hot carrier injection suppression circuit

Details Hot carrier injection suppression circuit Hot carrier injection suppression circuit

2006-11-21

2006-11-21

Lam, Tuan T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C327S112000, C326S082000, C326S083000, C326S086000

Reexamination Certificate

active

07138836

ABSTRACT:
A method of preventing Hot Carrier Injection in input/output connections on low voltage integrated circuits. As integrated circuit voltages drop generally so does the external voltages that those circuits can tolerate. By placing input/output devices, in series, external voltages can be divided between the devices thereby reducing junction voltages seen by internal devices. A circuit for preventing Hot Carrier Injection in these input/output devices comprises comparing an input voltage to a reference voltage, and if conditions that would produce Hot Carrier Injection are present (e.g. when input voltage is greater than reference voltage), slowing the turn-on of one of the series connected input/output devices, thereby reducing the voltage from the drain-to-source of another series connected input/output device.

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