Circuit arrangement for a digital circuit using differential log

Details Circuit arrangement for a digital circuit using differential log Circuit arrangement for a digital circuit using differential log

1998-09-10

2000-07-18

Santamauro, Jon

Electronic digital logic circuitry

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

Bipolar transistor

326 18, 326 75, 326 89, H03K 19082

Patent

active

060912669

ABSTRACT:
Circuits using differential logic are employed in high-speed optical communications systems. An essential problem in the design of large-scale integrated circuits for this purpose is the control of undesired heat generation, so that the circuits should have low power consumption. According to the invention, a reduction in power consumption is achieved by reducing the number of stages connected in parallel with respect to the power supply. To accomplish this, part of the parallel-connected stages are connected in series with the remaining part of the parallel-connected stages, so that the total number of parallel branches is reduced.

REFERENCES:
patent: 4527078 (1985-07-01), Smith
patent: 4978871 (1990-12-01), Jordan
patent: 5068550 (1991-11-01), Barre
patent: 5485106 (1996-01-01), Drost et al.
patent: 5530444 (1996-06-01), Tice et al.
U. Tietze et al, "Halbeiter-Schaltungstechnik", 8th Ed., Springer-Verlag Berlin, 1986, pp. 56-59.

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