Integrated circuit having reduced inductive noise

Details Integrated circuit having reduced inductive noise Integrated circuit having reduced inductive noise

1995-10-12

1997-07-08

Hudspeth, David R.

Electronic digital logic circuitry

Signal sensitivity or transmission integrity

Output switching noise reduction

326 28, H03K 1716

Patent

active

056465432

ABSTRACT:
An integrated circuit output section has a controller that controls a plurality of drivers to transmit data signals over output lines in a group staggered manner to substantially reduce the generation of inductive noise or ground and power bounce. The controller staggers the transmission of the data signals in each group relative to the other groups to achieve a reduction in inductive noise of greater than 25% using relatively short total staggering times of less than five times the transition switching time of a driver for the groups of data signals. Also, an enhanced reduction in inductive noise is achieved with a total staggering time equal to or less than a driver transition switching time, wherein at least one group has a different number of data signals than the other groups.

REFERENCES:
patent: 4479216 (1984-10-01), Krambeck et al.
patent: 4587445 (1986-05-01), Kanuma
patent: 4857765 (1989-08-01), Cahill
patent: 5073730 (1991-12-01), Hoffman
patent: 5229657 (1993-07-01), Rackley
patent: 5488325 (1996-01-01), Sato
A.J. Rainal "Computing Inductive Noise of Chip Packages", AT&T Bell Laboratories Tech. J., vol. 63, No. 1, (1984).
A.J. Rainal, "Eliminating Inductive Noise of External Chip Interconnections", IEEE Journal of Solid-State Circuits, vol. 29, No. 2, pp. 126-129 (1994).

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