SN54AS882A, SN74AS882A

32-BIT LOOK-AHEAD CARRY GENERATORS

SDAS235 – D2661, DECEMBER 1982 – REVISED NOVEMBER 1985

POST OFFICE BOX 655303

3

FUNCTION TABLE

FOR Cn + 32 OUTPUT

INPUTS

OUTPUT

G7

G6

G5

G4

G3

G2

G1

G0

P7

P6

P5

P4

P3

P2

P1

P0

Cn

Cn + 32

L

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

H

X

L

XXXXX

X

L

XXXXXXXX

H

X

X

L

XXXX

X

L

L

XXXXXXX

H

X

XX

L

XXX

X

L

L

L

XXXXXX

H

X

X

X

X

L

X

X

X

LLLL

XXXXX

H

X

XXXX

L

X

X

LLLLL

XXXX

H

X

XXXXX

L

X

LLLLLL

X

X

X

H

X

XXXXXX

LLLLLLLL

X

X

H

X

XXXXXX

X

LLLLLLLL

H

H

All other combinations

L

FUNCTION TABLE

FOR Cn+24 OUTPUT

INPUTS

OUTPUT

G5

G4

G3

G2

G1

G0

P5

P4

P3

P2

P1

P0

Cn

Cn + 24

L

X

X

X

X

X

X

X

X

X

X

X

X

H

X

L

XXX

X

L

XXXXXX

H

X

X

L

XX

X

L

L

XXXXX

H

X

XX

L

X

X

L

L

L

XXXX

H

X

X

X

X

L

X

LLLL

X

X

X

H

X

XXXX

LLLLLL

X

X

H

X

XXXX

X

LLLLLL

H

H

All other combinations

L

Function Tables

FOR Cn + 8 OUTPUT

FOR Cn + 16 OUTPUT

INPUTS

OUTPUT

X

X

X

L

L

P1P0Cn

X

X

X

X

L

X

X

X

X

H

H

H

H

H

H

L

P2

X

X

L

L

L

Cn + 16

P3

X

L

L

L

L

G0

X

X

X

L

X

G1

X

X

L

X

X

G2

X

L

X

X

X

G3

L

X

X

X

X

All other combinations

INPUTS

OUTPUT

H

H

H

L

Cn + 16

Cn

X

X

H

X

L

L

P1P0

X

X

L

G0

X

L

X

G1

L

X

X

All other combinations

Any inputs not shown in a given table are irrelevant with respect to that output.