High speed circuit with CMOS and bipolar logic stages

Details High speed circuit with CMOS and bipolar logic stages High speed circuit with CMOS and bipolar logic stages

1994-12-23

1996-04-23

Westin, Edward P.

Electronic digital logic circuitry

Function of and, or, nand, nor, or not

Bipolar and fet

326 43, 326 44, H03K 19173

Patent

active

055107338

ABSTRACT:
An integrated circuit includes a bipolar logic stage and a CMOS logic stage. The bipolar logic stage includes a common emitter line positioned along a central axis, and a set of bipolar signal drive blocks arranged along the central axis. Each of the bipolar signal drive blocks includes a bipolar transistor with an emitter connected to the common emitter line. Each of the bipolar signal drive blocks further includes an emitter-base reverse voltage protection device. The CMOS logic stage includes a plurality of CMOS logic blocks connected to the set of bipolar signal drive blocks. The CMOS logic blocks are arranged in a compact configuration that is substantially perpendicular to the central axis. The CMOS logic stage performs logical operations on a set of input signals to generate a set of intermediate signals that are driven by the set of bipolar signal drive blocks onto the common emitter line. The common emitter line executes a hardwired logical OR operation on the intermediate signals to produce a high speed output signal.

REFERENCES:
patent: 4661728 (1987-04-01), Kashimura
patent: 4725745 (1988-02-01), Kondo et al.
patent: 4789797 (1988-12-01), Vasseghi
patent: 4987326 (1991-01-01), Satoh

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