Russell A Keefer

US Patent:

40442713, Aug 23, 1977

Filed:

Sep 9, 1974

Appl. No.:

5/504393

Inventors:

Jerome J. Symanski - San Diego CA
Russell L. Keefer - Spring Valley CA

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

H03K 114
H03K 500

US Classification:

307262

Abstract:

A voltage level shifting driver and receiver for interfacing systems using ositive logic levels and systems using negative logic levels. The driver operates to convert positive voltage logic levels to negative voltage logic levels and the receiver operates to convert negative voltage logic levels back to positive voltage logic levels.