Reduced power consumption bi-directional buffer

The present invention relates to electronic circuits and specifically to bi-directional buffers. A bi-directional buffer includes the capability to turn the current mirror off when the bi-directional buffer is in the receive mode and quickly turn the current mirror on when the bi-directional buffer...

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Main Authors Clee, James T, Morris, Bernard L, Guziak, James E
Format Patent
LanguageEnglish
Published 08.07.2003
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Abstract The present invention relates to electronic circuits and specifically to bi-directional buffers. A bi-directional buffer includes the capability to turn the current mirror off when the bi-directional buffer is in the receive mode and quickly turn the current mirror on when the bi-directional buffer goes into the transmit mode. This is accomplished in part by a pair of switches included in the current mirror, which are controlled by enable signals. The switches are configured such that the output transistor of the current mirror is turned on when the bi-directional buffer is in the transmit mode, and turned off when the bi-directional buffer is in the receive mode. Further, a pull up circuit may be added to the current mirror to more quickly bring the gate of the output transistor of the current mirror to its conduction threshold voltage.
AbstractList The present invention relates to electronic circuits and specifically to bi-directional buffers. A bi-directional buffer includes the capability to turn the current mirror off when the bi-directional buffer is in the receive mode and quickly turn the current mirror on when the bi-directional buffer goes into the transmit mode. This is accomplished in part by a pair of switches included in the current mirror, which are controlled by enable signals. The switches are configured such that the output transistor of the current mirror is turned on when the bi-directional buffer is in the transmit mode, and turned off when the bi-directional buffer is in the receive mode. Further, a pull up circuit may be added to the current mirror to more quickly bring the gate of the output transistor of the current mirror to its conduction threshold voltage.
Author Guziak, James E
Clee, James T
Morris, Bernard L
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References Hara et al. (4725982) 19880200
McClure (5576656) 19961100
Ratner (5726587) 19980300
Warner et al. (5119365) 19920600
Morris (6064229) 20000500
Morris (5808480) 19980900
Lee (5436577) 19950700
Clee et al. (6029248) 20000200
Morris et al. (5926056) 19990700
Bridgewater, Jr. (6034551) 20000300
Van Zalinge (5966110) 19991000
Mao (4594577) 19860600
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Snippet The present invention relates to electronic circuits and specifically to bi-directional buffers. A bi-directional buffer includes the capability to turn the...
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Title Reduced power consumption bi-directional buffer
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