HD74HC83 Datasheet, PDF (2/7 Pages) Hitachi Semiconductor – 4-Bit Binary Full Adder (with Fast Carry)

HD74HC83
Function Table
Outputs
A1 / A3
Inputs
B1 / B3
A1 / A3
A1 / A3
When C0 = L / When C2 = L
Σ1 / Σ3
Σ2 / Σ4
C2 / C4
When C0 = H / When C2 = H
Σ1 / Σ3
Σ2 / Σ4
C2 / C4
L
L
L
L
L
L
L
H
L
L
H
L
L
L
H
L
L
L
H
L
L
H
L
L
H
L
L
L
H
L
H
H
L
L
L
H
L
H
H
L
L
L
H
L
L
H
L
H
H
L
H
L
H
L
H
H
L
L
L
H
L
H
H
L
H
H
L
L
L
H
H
H
H
L
L
L
H
H
L
H
L
L
L
H
L
H
L
H
H
L
H
L
L
H
H
H
L
L
L
H
L
H
L
H
H
H
L
L
L
H
H
H
L
H
L
L
H
H
L
H
L
L
H
H
L
L
H
H
L
H
H
L
H
H
H
L
H
L
H
H
L
H
H
H
H
L
H
L
H
H
H
H
H
H
L
H
H
H
H
H
H : High level
L : Low level
X : Irrelevant
Note : Input conditions at A1, B1, A2, B2 and C0 are used to determine outputs Σ1 and Σ2 and the value of the internal
carry C2.
The value at C2, A3, B3, A4 and B4 are than used to determine outputs Σ3, Σ4 and C4
Pin Arrangement
A4 1
Σ3 2
A3 3
B3 4
V_CC 5
Σ2 6
B2 7
A2 8
Σ3^{A4 B4}Σ4
A3
C4
B3
C0
Σ2
B1
B2
A1
A2 Σ1
(Top view)
16 B4
15 Σ4
14 C4
13 C0
12 GND
11 B1
10 A1
9 Σ1
Rev.2.00, Oct 06, 2005 page 2 of 6