SN74LS283MG ON Semiconductor, SN74LS283MG Datasheet - Page 3

• Manufacturer Part Number: SN74LS283MG
• Manufacturer: ON Semiconductor

Specifications of SN74LS283MG

• Logic Family: LS
• Logical Function: Binary Full Adder
• Technology: Bipolar
• Number Of Elements: 1
• Number Of Bits: 4
• Propagation Delay Time: 24ns
• High Level Output Current: -400uA
• Low Level Output Current: 8mA
• Operating Supply Voltage (typ): 5V
• Operating Temp Range: 0C to 70C
• Operating Supply Voltage (min): 4.75V
• Operating Supply Voltage (max): 5.25V
• Pin Count: 16
• Mounting: Surface Mount
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Compliant

FUNCTIONAL DESCRIPTION
the incoming carry. The binary sum appears on the sum
outputs (∑
C
∑
Where: (+) = plus
Interchanging inputs of equal weight does not affect the operation, thus C
V
GND = PIN 8
0
2
CC
The LS283 adds two 4-bit binary words (A plus B) plus
Example:
+ 4 ∑
+ (A
= PIN 16
= PIN NUMBERS
1
+ B
3
C
0
+ 8 ∑
1
−∑
1
7
Active HIGH
Active LOW
logic levels
) + 2(A
A
4
1
4
) and outgoing carry (C4) outputs.
∑
5
+ 16C
1
2
4
B
+ B
1
4
6
2
) + 4(A
A
3
∑
2
C
2
+ B
1
3
C
1
L
0
1
0
3
) + 8(A
B
A
2
L
0
1
1
2
A
4
H
1
0
2
+ B
4
A
L
0
1
) = ∑
3
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LOGIC DIAGRAM
A
H
A
C
∑
1
1
0
4
3
3
2
+ 2
13
14
B
H
1
0
1
3
B
3
B
L
0
1
15
2
0
can be used with either all inputs and outputs active HIGH
(positive 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.
, A
Due to the symmetry of the binary add function the LS283
B
1
L
0
1
, B
3
1
, can be arbitrarily assigned to pins 7, 5 or 3.
B
H
1
0
4
∑
H
1
0
1
∑
C
4
3
A
∑
10
H
1
0
4
2
12
∑
L
0
1
3
B
4
11
∑
L
0
1
4
C
H
1
0
4
(carry+5+6=12)
C
(10+9=19)
4
9