Symmetric selector circuit for event logic

Details Symmetric selector circuit for event logic Symmetric selector circuit for event logic

1996-06-13

1998-04-21

Hudspeth, David R.

Electronic digital logic circuitry

Multifunctional or programmable

Field-effect transistor

326 21, 326 56, 327415, H03K 1900

Patent

active

057421820

ABSTRACT:
A selector circuit with symmetry is disclosed. It steers input transition events to one of two outputs according to the value of a data input signal. The selector circuit includes a first flip-flop and a second flip-flop. Depending on the state of a data input, one of the two flip-flops is enabled and the other is disabled. The disabled flip-flop will be in a tristate mode. The enabled flip-flop continues storing its data, and may load the disabled flip-flop with this data. The selector circuit further includes pass gates to couple the outputs of the flip-flops based on the state of the event input.

REFERENCES:
patent: 5128940 (1992-07-01), Wakimoto
patent: 5420529 (1995-05-01), Guay et al.
patent: 5497118 (1996-03-01), Ueno et al.
patent: 5576651 (1996-11-01), Phillips
patent: 5640117 (1997-06-01), Tanoi
patent: 5652724 (1997-07-01), Manning

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