Electronic digital logic circuitry – Function of and – or – nand – nor – or not – Bipolar transistor
Patent
1996-10-17
1999-06-08
Santamauro, Jon
Electronic digital logic circuitry
Function of and, or, nand, nor, or not
Bipolar transistor
326 22, 326 31, 327 52, 327563, 330 2, 330258, H03K 19086, H03F 345
Patent
active
059107367
ABSTRACT:
A differential-type data transmitter includes a differential amplifier pair (T1, T2, T4, T6, T8) having a plurality of transistors and receiving a pair of a first input signal and a second input signal. A load (T3, T5, T7) is connected to the differential amplifier pair. A detection circuit (T9, T10, I4, I5, I6, I7) connected to a junction between the differential amplifier pair and the load is operative for detecting whether or not the first and second input signals are outside a common-mode input voltage range with respect to the differential amplifier pair. A first output circuit (T12) connected to the detection circuit is operative for outputting a signal depending on an output signal from the differential amplifier pair. The signal outputted from the first output circuit is set to a given level when the detection circuit detects that the first and second input signals are outside the conmmon-mode input voltage range. A second output circuit (T11) connected to the detection circuit is operative for outputting a detection signal representing whether or not the detection circuit detects that the first and second input signals are outside the common-mode input voltage range.
REFERENCES:
patent: 3582802 (1971-06-01), Weekes et al.
patent: 5294893 (1994-03-01), Ryat
patent: 5298809 (1994-03-01), Yamaguchi
patent: 5420550 (1995-05-01), May
Hayakawa Junji
Nagata Junichi
Denso Corporation
Santamauro Jon
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