Auxiliary output driver

Details Auxiliary output driver Auxiliary output driver

2005-10-04

2005-10-04

Lam, Tuan T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

C327S142000, C327S143000

Reexamination Certificate

active

06952119

ABSTRACT:
A BiCMOS auxiliary output driver is provided to maintain output logic signal levels when integrated circuit chip power supply voltage is outside its nominal range. When the power supply voltage level is within design tolerance for a MOSFET output driver stage, the auxiliary output driver is off; when below design tolerance, the auxiliary output driver is turned on. Driver stage output pad signal level is maintained at a desired state level by the auxiliary output driver whenever the power supply slips below its design tolerance range.

REFERENCES:
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patent: 5352932 (1994-10-01), Tihanyi
patent: 5565807 (1996-10-01), Ward
patent: 5811962 (1998-09-01), Ceccherelli et al.
patent: 6246243 (2001-06-01), Audy
patent: 6268764 (2001-07-01), Eagar et al.
patent: 6768352 (2004-07-01), Maher et al.

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