SEMICONDUCTOR TECHNICAL DATA
L SUFFIX
CERAMIC
CASE 620
The MC14008B 4–bit full adder is constructed with MOS P–channel and
N–channel enhancement mode devices in a single monolithic structure. This
device consists of four full adders with fast internal look–ahead carry output.
It is useful in binary addition and other arithmetic applications. The fast
parallel carry output bit allows high–speed operation when used with other
adders in a system.
P SUFFIX
PLASTIC
CASE 648
•
•
•
•
•
Look–Ahead Carry Output
Diode Protection on All Inputs
All Outputs Buffered
Supply Voltage Range = 3.0 Vdc to 18 Vdc
Capable of Driving Two Low–power TTL Loads or One Low–power
Schottky TTL Load Over the Rated Temperature Range
Pin–for–Pin Replacement for CD4008B
D SUFFIX
SOIC
CASE 751B
•
ORDERING INFORMATION
MC14XXXBCP
MC14XXXBCL
MC14XXXBD
Plastic
Ceramic
SOIC
MAXIMUM RATINGS* (Voltages Referenced to V
)
SS
Symbol
Parameter
DC Supply Voltage
Value
Unit
V
V
DD
– 0.5 to + 18.0
T
A
= – 55° to 125°C for all packages.
V , V
in out
Input or Output Voltage (DC or Transient)
– 0.5 to V
DD
+ 0.5
V
l , l
in out
Input or Output Current (DC or Transient),
per Pin
± 10
mA
TRUTH TABLE
(One Stage)
P
D
Power Dissipation, per Package†
Storage Temperature
500
mW
C
C
B
A
C
S
in
out
T
stg
– 65 to + 150
260
0
0
0
0
0
0
1
1
0
1
0
1
0
0
0
1
0
1
1
0
T
L
Lead Temperature (8–Second Soldering)
C
* Maximum Ratings are those values beyond which damage to the device may occur.
†Temperature Derating:
Plastic “P and D/DW” Packages: – 7.0 mW/ C From 65 C To 125 C
Ceramic “L” Packages: – 12 mW/ C From 100 C To 125 C
1
1
1
1
0
0
1
1
0
1
0
1
0
1
1
1
1
0
0
1
BLOCK DIAGRAM
HIGH–SPEED
PARALLEL CARRY
14
C
out
PIN ASSIGNMENT
A4
B3
1
2
16
15
V
DD
B4
B4 15
ADDER
4
13 S4
12 S3
11 S2
10 S1
A4
1
A3
B2
A2
B1
A1
3
4
5
6
7
8
14
13
12
11
10
9
C
out
C4
S4
S3
S2
S1
B3
A3
2
3
ADDER
3
C3
B2
A2
4
ADDER
2
5
V
C
in
SS
C2
B1
A1
6
7
ADDER
1
V
V
= PIN 16
= PIN 8
DD
SS
C
9
in
REV 3
1/94
Motorola, Inc. 1995
MOTOROLA CMOS LOGIC DATA
MC14008B
37