SN54LS83AJ
5-81
FAST AND LS TTL DATA
4-BIT BINARY FULL ADDER
WITH FAST CARRY
The SN54/74LS83A is a high-speed 4-Bit binary Full Adder with internal
carry lookahead. It accepts two 4-bit binary words (A
1
–A
4
, B
1
–B
4
) and a
Carry Input (C
0
). It generates the binary Sum outputs ∑
1
–∑
4
) and the Carry
Output (C
4
) from the most significant bit. The LS83A operates with either
active HIGH or active LOW operands (positive or negative logic). The
SN54/74LS283 is recommended for new designs since it is identical in
function with this device and features standard corner power pins.
14 13 12 11 10 9
1 2 3 4 5 6
B
4
7
16 15
8
Σ
4
C
4
C
0
GND B
1
A
1
Σ
1
A
4
Σ
3
A
3
Σ
2
B
2
A
2
CONNECTION DIAGRAM DIP (TOP VIEW)
B
3
V
CC
NOTE:
The Flatpak version has the
same pinouts (Connection
Diagram) as the Dual In-Line
Package.
PIN NAMES LOADING (Note a)
HIGH
LOW
A
1
–A
4
B
1
–B
4
C
0
Σ
1
–Σ
4
C
4
Operand A Inputs
Operand B Inputs
Carry Input
Sum Outputs (Note b)
Carry Output (Note b)
1.0 U.L.
1.0 U.L.
0.5 U.L.
10 U.L.
10 U.L.
0.5 U.L.
0.5 U.L.
0.25 U.L.
5 (2.5) U.L.
5 (2.5) U.L.
NOTES:
a) 1 TTL Unit Load (U.L.) = 40 µA HIGH/1.6 mA LOW.
b) The Output LOW drive factor is 2.5 U.L. for Military (54) and 5 U.L. for Commercial (74)
Temperature Ranges.
SN54/74LS83A
4-BIT BINARY FULL ADDER
WITH FAST CARRY
LOW POWER SCHOTTKY
J SUFFIX
CERAMIC
CASE 620-09
N SUFFIX
PLASTIC
CASE 648-08
16
1
16
1
ORDERING INFORMATION
SN54LSXXJ Ceramic
SN74LSXXN Plastic
SN74LSXXD SOIC
16
1
D SUFFIX
SOIC
CASE 751B-03
LOGIC SYMBOL
10 11 8 7 3 4 1 16
9 6 2 15 14
13 14C
0
B
1
A
2
B
2
A
3
B
3
A
4
B
4
C
4
∑
1
∑
2
∑
3
∑
4
C
4
LOGIC DIAGRAM
V
CC
= PIN 5
GND = PIN 12
= PIN NUMBERS
C
1
C
2
C
3
C
0
A
1
B
1
A
2
B
2
A
3
B
3
A
4
B
4
C
4
∑
1
∑
2
∑
3
∑
4
15
3 410 11 161
2
6
7
9
13 8
14
Loading...