Bus control buffer amplifier
AssigneeSGS-Thomson Microelectronics S.A.
InventorsIlias Bouras, Constantin Papadas, Jean-Pierre Moreau
Life of this patent
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Abstract
The present invention relates to a bus control buffer amplifier. The output terminal is associated with a first pull-down N-channel MOS transistor and with a second pull-up N-channel MOS transistor. The first N-channel MOS transistor is directly controlled by an input signal. The second MOS transistor is an N-channel transistor, and its gate is controlled by a third pull-down N-channel MOS transistor directly controlled by the input signal, and by a fourth pull-up N-channel MOS transistor, which is controlled by the inverted input signal. The fourth N-channel MOS transistor has a very abrupt drain-substrate junction.
Claims23
A bus control buffer amplifier, including an input terminal and an output terminal connected to the output line, the output terminal being associated with a first pull-down transistor and a second pull-up transistor, the first transistor being directly controlled by an input signal, wherein:
- the second transistor has its gate is controlled by a third pull-down N-channel MOS transistor directly controlled by the input signal, and by a fourth pull-up N-channel MOS transistor, which is controlled by the inverted input signal;
- and the fourth N-channel MOS transistor includes a very abrupt drain-substrate junction.
A buffer amplifier comprising:
- an input terminal;
- an output terminal;
- a first transistor coupled to the output terminal and being directly controlled by an input signal from the input terminal;
- a second transistor coupled to the output terminal;
- said first and second transistors being series connected;
- a third transistor coupled to and for controlling said second transistor and also controlled by the input signal from said input terminal;
- and
- a fourth transistor coupled to said second transistor and controlled from said input terminal;
- said third and fourth transistors being series connected.
Dependencies are inferred from the claim text.