Battery backed configurable output buffer

Details Battery backed configurable output buffer Battery backed configurable output buffer

1996-11-18

1998-11-10

Gaffin, Jeffrey A.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

307 64, 395750, 365229, 326 58, 326 85, 326 87, 326 91, H03K 19017

Patent

active

058348590

ABSTRACT:
The present invention is a battery backed output buffer which provides a well-defined signal, even during battery power. The buffer includes a regular output buffer for providing output data during operation with a main power supply and for switching to a tri-state during battery power. The buffer also includes a configurable battery backed output buffer which provides a predetermined output signal during battery operation and produces a signal in the tri-stated during main power operation.

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patent: 4880997 (1989-11-01), Steele
patent: 4908790 (1990-03-01), Little et al.
patent: 4963766 (1990-10-01), Lundberg
patent: 5237699 (1993-08-01), Little et al.
patent: 5315549 (1994-05-01), Scherpenberg et al.
patent: 5557229 (1996-09-01), Eitan

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