Input/output buffer having analog and digital input modes

Details Input/output buffer having analog and digital input modes Input/output buffer having analog and digital input modes

2005-05-24

2005-05-24

Lam, Tuan T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C327S415000, C326S083000

Reexamination Certificate

active

06897688

ABSTRACT:
An input/output buffer is operative in an analog mode and a digital mode. The buffer includes a pad, a digital signal line which includes a transmission gate connected to the pad, an analog signal line connected to the pad, an analog/digital mode controller which sets an output level of the digital signal line in the analog mode, and a transmission gate controller which controls the transmission gate when a signal voltage of the pad exceeds a reference voltage.

REFERENCES:
patent: 5635745 (1997-06-01), Hoeld
patent: 6087887 (2000-07-01), Lim et al.
patent: 6509758 (2003-01-01), Piasecki et al.
patent: 20020101272 (2002-08-01), Bales et al.
patent: 20030151427 (2003-08-01), Piasecki et al.

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