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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
NBCD Adder
The MC14560B adds two 4–bit numbers in NBCD (natural binary coded
decimal) format, resulting in sum and carry outputs in NBCD code.
This device can also subtract when one set of inputs is complemented with
a 9's Complementer (MC14561B).
All inputs and outputs are active high. The carry input for the least
significant digit is connected to V SS for no carry in.
Diode Protection on All Inputs
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
Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î
MAXIMUM RATINGS*
(Voltages Referenced to V SS )
Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î
Symbol
Parameter
V DD
DC Supply Voltage
V in , V out
Input or Output Voltage (DC or Transient)
I in , I out
Input or Output Current (DC or Transient),
per Pin
P D
Power Dissipation, per Package†
T stg
Storage Temperature
T L
Lead Temperature (8–Second Soldering)
* 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
Input
A4
A3
A2
A1
B4
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
1
0
0
0
0
1
1
1
0
0
1
1
1
0
1
0
0
0
0
0
1
1
0
1
1
0
0
1
1
* Partial truth table to show logic operation for representative input values.
This device contains protection circuitry to guard against damage
due to high static voltages or electric fields. However, precautions must
be taken to avoid applications of any voltage higher than maximum rated
voltages to this high-impedance circuit. For proper operation, V in and
V out should be constrained to the range V SS
Unused inputs must always be tied to an appropriate logic voltage
level (e.g., either V SS or V DD ). Unused outputs must be left open.
MC14560B
6–434
– 0.5 to + 18.0
– 0.5 to V DD + 0.5
– 65 to + 150
TRUTH TABLE*
B3
B2
B1
C in
C out
S4
0
0
0
0
0
0
0
0
0
1
0
0
0
1
1
0
0
0
0
1
1
1
0
1
1
0
0
0
1
0
1
0
0
1
1
0
1
0
1
0
1
0
0
0
0
0
1
0
0
0
1
1
1
1
(V in or V out )
Value
Unit
V
V
10
mA
500
mW
_ C
_ C
260
Output
S3
S2
S1
0
0
0
0
0
1
1
1
1
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
0
0
1
V DD .
MC14560B
L SUFFIX
CERAMIC
CASE 620
P SUFFIX
PLASTIC
CASE 648
D SUFFIX
SOIC
CASE 751B
ORDERING INFORMATION
MC14XXXBCP
Plastic
MC14XXXBCL
Ceramic
MC14XXXBD
SOIC
T A = – 55 to 125 C for all packages.
BLOCK DIAGRAM
7
C in
S1
13
A1
15
14
B1
S2
12
A2
1
2
B2
S3
11
3
A3
B3
4
S4
10
5
A4
B4
C out
9
6
V DD = PIN 16
V SS = PIN 8
MOTOROLA CMOS LOGIC DATA
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