Carry propagate adder circuit which differentially senses a carr

Details Carry propagate adder circuit which differentially senses a carr Carry propagate adder circuit which differentially senses a carr

1984-04-26

1986-01-07

Malzahn, David H.

Boots, shoes, and leggings

G06F 750

Patent

active

045637512

ABSTRACT:
A fast carry propagate adder circuit which differentially senses a carry input bit with a sense amplifier is provided. First and second carry bit conductors are precharged to an equal voltage potential by a precharge portion. A voltage differential between the two carry bit conductors is sensed to provide both an output sum bit and an output carry bit in response to two input sum bits, an input carry bit and the complement of the input carry bit.

REFERENCES:
patent: 4052604 (1977-10-01), Maitland et al.
patent: 4357675 (1982-11-01), Freyman
patent: 4422157 (1983-12-01), Uhlenhoff
patent: 4425623 (1984-01-01), Russell
patent: 4439835 (1984-03-01), Best et al.
patent: 4471454 (1984-09-01), Dearden et al.

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