Motorola MC74F182D, MC74F182N, MC54F182J Datasheet
4-97
FAST AND LS TTL DATA
CARRY LOOKAHEAD
GENERATOR
The MC54/74F182 is a high-speed carry lookahead generator. It is generally used with the F181, F381 or 29F01 4-bit arithmetic logic unit to provide highspeed lookahead over word lengths of more than four bits.
• Provides Lookahead Carries Across a Group of Four ALUs
• Multi-level Lookahead High-speed Arithmetic Operation Over Long
Word Lengths
Cn +
x
CONNECTION DIAGRAM DIP (TOP VIEW)
1516 14 13 12 11 10
21 3 4 5 6 7
V
CC
9
8
P
2G2Cn
Cn + yG
Cn +
z
G
1P1G0P0G3P3
P
GND
LOGIC DIAGRAM
Cn +
x
G
3
G
P
3
G2P
2
G
1P1
G
0P0
C
n
Cn +
y
Cn +
z
P
MC54FXXXJ Ceramic
MC74FXXXN Plastic
MC74FXXXD SOIC
MC54/74F182
CARRY LOOKAHEAD
GENERATOR
FAST SCHOTTKY TTL
J SUFFIX
CERAMIC
CASE 620-09
N SUFFIX
PLASTIC
CASE 648-08
16
1
16
1
ORDERING INFORMATION
16
1
D SUFFIX
SOIC
CASE 751B-03
LOGIC SYMBOL
13
4
3
2
1
15
14
6
5
7 10
9
11
12
C
n
P
0
G
0
P
1
G
1
P
2
G
2
P
3
G
3
P G
Cn +
x
Cn +
y
Cn +
z
VCC = PIN 16
GND = PIN 8
4-98
FAST AND LS TTL DATA
MC54/74F182
FUNCTION TABLE
Inputs Outputs
C
n
G
0
P
0
G
1
P
1
G
2
P
2
G
3
P
3
C
n+x
C
n+y
C
n+z
G P
X H H L
L H X L
X L X H
H X L H
X X X H H L
X H H H X L
L H X H X L
X X X L X H
X L X X L H
H X L X L H
X X X X X H H L
X X X H H H X L
X H H H X H X L
L H X H X H X L
X X X X X L X H
X X X L X X L H
X L X X L X L H
H X L X L X L H
X X X X X H H H
X X X H H H X H
X H H H X H X H
H H X H X H X H
X X X X X L X L
X X X L X X L L
X L X X L X L L
L X L X L X L L
H X X X H
X H X X H
X X H X H
X X X H H
L L L L L
H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
GUARANTEED OPERATING RANGES
Symbol Parameter Min Typ Max Unit
V
CC
Supply Voltage 54,74 4.5 5.0 5.5 V
T
A
Operating Ambient Temperature Range
54 –55 25 125 °C
A
74 0 25 70
I
OH
Output Current — High 54, 74 –1.0 mA
I
OL
Output Current — Low 54, 74 20 mA
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