Input buffer circuit for receiving multiple level input voltages
CA 1201491 A · Owner: Motorola, Inc. · Inventors: Whatley, Roger A.; Olesin, Andrew S.; Smith, Michael D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, An input buffer circuit (10) having a single input for receiving input voltages (VIN) characterized by having varying voltage swings is provided. First (12 and 15) and second (16 and 18) inverter circuits having differing switchpoint voltages are coupled to a level shifting portion (13, 17). The level shifting portion varies the level of swing of the input voltage (VIN) and buffers the input voltage (VIN). In one form, voltage coupling circuitry (22 23) is interposed between the level shifting portion and a latching portion (25, 26) which provides the input voltage (VIN) as an output signal at a predetermined voltage level. In another form voltage coupling circuitry (48, 53), …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted March 4, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 4, 2003.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.