HD74AC283/HD74ACT283
4-bit Binary Full Adder with Fast Carry
Description
The HD74AC283/HD74ACT283 high-speed 4-bit binary full adder with internal carry lookahead accepts
two 4-bit binary works (A
0
鈥?A
3
, B
0
鈥?B
3
) and a Carry input (C
0
). It generates the binary Sum outputs (S
0
鈥?/div>
S
3
) and the Carry output (C
4
) from the most significant bit. The HD74AC283/HD74ACT283 will operate
with either active High or active Low operands (positive or negative logic).
Features
鈥?/div>
Outputs Source/Sink 24 mA
鈥?/div>
HD74ACT283 has TTL-Cmpatible Inputs
Pin Arrangement
S
1
1
B
1
2
A
1
3
S
0
4
A
0
5
B
0
6
C
0
7
GND 8
(Top view)
16 V
CC
15 B
2
14 A
2
13 S
2
12 A
3
11 B
3
10 S
3
9 C
4
next