4-to-2 carry save adder using limited switching dynamic logic

Details 4-to-2 carry save adder using limited switching dynamic logic 4-to-2 carry save adder using limited switching dynamic logic

2007-10-16

2007-10-16

Ngo, Chuong D (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

Reexamination Certificate

active

10702989

ABSTRACT:
A 4-to-2 carry save adder using limited switching dynamic logic (LSDL) to reduce power consumption while reducing the delay of outputting the sum and carry bits. The 4-to-2 carry save adder may include a first LSDL circuit configured to output a sum bit. The carry save adder may further include a second LSDL circuit configured to output a carry bit. Both the first and second LSDL circuits use a carry generated in the current stage that was previously generated in the previous stage (next lower order bit position). Since the carry is generated in the current stage and not in the previous stage, the delay in outputting the sum and carry bits is reduced and hence the performance of carry save adders is improved. Further, since LSDL circuits were used in the carry save adder, power consumption was reduced while using a small amount of area.

REFERENCES:
patent: 3340388 (1967-09-01), Earle
patent: 4556948 (1985-12-01), Mercy
patent: 5303176 (1994-04-01), Hrusecky et al.
patent: 5805491 (1998-09-01), Bechade
patent: 5818747 (1998-10-01), Wong
patent: 6415311 (2002-07-01), Purcell et al.
patent: 6466960 (2002-10-01), Winters
patent: 6567835 (2003-05-01), Blomgren et al.
patent: 2003/0014459 (2003-01-01), Fletcher

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