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US 6,388,469 B1Granted
Multiple power supply output driver
AssigneeCypress Semiconductor Corporation
InventorsJeffery Scott Hunt, Muthukumar Nagarajan
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Abstract
An apparatus comprising a first circuit and a second circuit. The first circuit may be configured to generate a first control signal and a second control signal in response to (i) a first input signal, (ii) a second input signal and (iii) a voltage control signal. The second circuit configured to generate (i) an output signal in response to the first and the second control signals and (ii) the voltage control signal in response to a pad voltage.
Claims18
An apparatus comprising:
- a first circuit configured to generate a first control signal and a second control signal in response to (i) a first input signal, (ii) a second input signal and (iii) a voltage control signal;
- and
- a second circuit configured to generate said voltage control signal and a pad voltage in response to said first arid said second control signals, wherein said voltage control signal is at (i) a first supply voltage when said pad voltage is at a first voltage less than or equal to said first supply voltage and (ii) said pad voltage when said pad voltage is at a second voltage greater than said first supply voltage.
A circuit comprising:
- means for generating a first control signal and a second control signal in response to (i) a first input signal, (ii) a second input signal and (iii) a voltage control signal;
- and
- means for generating said voltage control signal and a pad voltage in response to said first and said second control signals, wherein said voltage control signal is at (i) a first supply voltage when said pad voltage is at a first voltage less than or equal to said first supply voltage and (ii) said pad voltage when said pad voltage is at a second voltage greater than said first supply voltage.
A method for providing high voltage tolerance in an output driver comprising:
- (A) generating a first control signal and a second control signal in response to (i) a first input signal, (ii) a second input signal and (iii) a voltage control signal;
- (B) generating a pad voltage;
- and
- (C) generating said voltage control signal, wherein said voltage control signal is at (i) a first supply voltage when said pad voltage is at a first voltage less than or equal to said first supply voltage and (ii) said pad voltage when said pad voltage is at a second voltage greater than said first supply voltage.
1 more element
Dependencies are inferred from the claim text.