74F182 Datasheet, PDF (3/8 Pages) NXP Semiconductors – Look-ahead carry generator

Truth Table
Inputs
Outputs
C_n G₀ P₀ G₁ P₁ G₂ P₂ G₃ P₃ C_n+x C_n+y C_n+z G
P
XHH
L
LHX
L
XLX
H
HX L
H
XXXHH
L
XHHHX
L
LHXHX
L
XXXLX
H
XLXXL
H
HX L X L
H
XXXXXHH
L
XXXHHHX
L
XHHHXHX
L
LHXHXHX
L
XXXXXLX
H
XXXLXXL
H
XLXXLXL
H
HX L X L X L
H
X
XXXXHH
H
X
XXHHHX
H
X
HHHXHX
H
H
HXHXHX
H
X
XXXXLX
L
X
XXLXXL
L
X
LXXLXL
L
L
XLXLXL
L
H
X
X
X
H
X
H
X
X
H
X
X
H
X
H
X
X
X
H
H
L
L
L
L
L
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
3
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