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SN54LS283 Datasheet(Fiches technique) 1 Page - Motorola, Inc

Numéro de pièce SN54LS283
Description  4-BIT BINARY FULL ADDER WITH FAST CARRY
Télécharger  4 Pages
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Fabricant  MOTOROLA [Motorola, Inc]
Site Internet  http://www.freescale.com
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5-1
FAST AND LS TTL DATA
4-BIT BINARY FULL ADDER
WITH FAST CARRY
The SN54 / 74LS283 is a high-speed 4-Bit Binary Full Adder with internal
carry lookahead. It accepts two 4-bit binary words (A1–A4, B1–B4) and a
Carry Input (C0). It generates the binary Sum outputs (∑1–∑4) and the Carry
Output (C4) from the most significant bit. The LS283 operates with either ac-
tive HIGH or active LOW operands (positive or negative logic).
14
13
12
11
10
9
1
2
3
4
5
6
7
16
15
8
VCC
Σ2
B3
A3
Σ3
A4
Σ4
B4
C4
B2
A2
Σ1
A1
B1
C0 GND
CONNECTION DIAGRAM DIP (TOP VIEW)
NOTE:
The Flatpak version
has the same pinouts
(Connection Diagram) as
the Dual In-Line Package.
PIN NAMES
LOADING (Note a)
HIGH
LOW
A1 – A4
Operand A Inputs
1.0 U.L.
0.5 U.L.
B1–B4
Operand B Inputs
1.0 U.L.
0.5 U.L.
C0
Carry Input
0.5 U.L.
0.25 U.L.
∑1–∑4
Sum Outputs (Note b)
10 U.L.
5 (2.5) U.L.
C4
Carry Output (Note b)
10 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.
SN54/74LS283
4-BIT BINARY FULL ADDER
WITH FAST CARRY
LOW POWER SCHOTTKY
ORDERING INFORMATION
SN54LSXXXJ
Ceramic
SN74LSXXXN
Plastic
SN74LSXXXD
SOIC
J SUFFIX
CERAMIC
CASE 620-09
N SUFFIX
PLASTIC
CASE 648-08
16
1
16
1
16
1
D SUFFIX
SOIC
CASE 751B-03
LOGIC SYMBOL
5
3 14 12 6 2 15 11
9
7
4
1 13 10
A1 A2 A3 A4 B1 B2 B3 B4
∑1 ∑2 ∑3 ∑4
VCC = PIN 16
GND = PIN 8
C0
C4




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