SN74LS83N Freescale, SN74LS83N Datasheet - Page 2

• Manufacturer Part Number: SN74LS83N
• Manufacturer: Freescale

Specifications of SN74LS83N

• Lead Free Status / RoHS Status: Supplier Unconfirmed

FUNCTIONAL DESCRIPTION
and outgoing carry (C 4 ) outputs.
logic) or with all inputs and outputs active LOW (negative logic). Note that with active HIGH Inputs, Carry Input can not be left open,
but must be held LOW when no carry in is intended.
Example:
13, etc.
GUARANTEED OPERATING RANGES
V CC
T A
I OH
I OL
The LS83A adds two 4-bit binary words (A plus B) plus the incoming carry. The binary sum appears on the sum outputs ( 1 – 4 )
C 0 + (A 1 +B 1 )+2(A 2 +B 2 )+4(A 3 +B 3 )+8(A 4 +B 4 ) = 1 +2 2 +4 3 +8 4 +16C 4
Where: (+) = plus
Due to the symmetry of the binary add function the LS83A can be used with either all inputs and outputs active HIGH (positive
Interchanging inputs of equal weight does not affect the operation, thus C 0 , A 1 , B 1 , can be arbitrarily assigned to pins 10, 11,
Symbol
Logic Levels
Active HIGH
Active LOW
Supply Voltage
Operating Ambient Temperature Range
Output Current — High
Output Current — Low
C 0
L
0
1
A 1
L
0
1
C 1 — C 3 are generated internally
C 0 — is an external input
C 4 — is an output generated internally
Parameter
A 2
H
1
0
C (n–1)
H
H
H
H
L
L
L
L
A 3
L
0
1
A 4
H
1
0
FAST AND LS TTL DATA
SN54/74LS83A
B 1
H
FUNCTIONAL TRUTH TABLE
1
0
A n
H
H
H
H
L
L
L
L
B 2
L
0
1
5-82
B 3
L
0
1
B n
H
H
H
H
L
L
L
L
B 4
H
1
0
54, 74
54
74
54
74
54
74
H
1
0
1
H
H
H
H
L
L
L
L
n
H
1
0
2
4.75
– 55
Min
4.5
0
L
0
1
3
L
0
1
4
C n
H
H
H
H
L
L
L
L
Typ
5.0
5.0
25
25
C 4
H
1
0
(10+9 = 19)
(carry+5+6 = 12)
– 0.4
Max
5.25
125
5.5
4.0
8.0
70
Unit
mA
mA
V
C