Differential circuit implemented by bipolar transistors free fro

Details Differential circuit implemented by bipolar transistors free fro Differential circuit implemented by bipolar transistors free fro

1992-02-26

1993-11-30

Westin, Edward P.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307443, 307475, H03K 19086, H03K 19092

Patent

active

052668460

ABSTRACT:
A differential circuit comprises a differential stage responsive to input voltage levels in an ECL range for producing an output signal at an output node, a setting stage associated with the differential stage and responsive to a set signal in a CMOS range for setting the output node to a predetermined level, wherein a level-shift element is coupled between a bipolar transistor responsive to the set signal and the common emitter node of bipolar transistors responsive to the input voltage levels so that each bipolar transistor is prevented from destruction due to excess reverse bias voltage applied to the base node and the emitter node.

REFERENCES:
patent: 3535546 (1970-10-01), Davis
patent: 3569746 (1971-03-01), Lacour et al.
patent: 3612911 (1971-10-01), Kroos
patent: 4565976 (1986-01-01), Campbell
patent: 5113095 (1992-05-01), Haehne

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