
MOTOROLA CMOS LOGIC DATA
6–449
MC14561B
TYPICAL APPLICATIONS
One MC14560B and one MC14561B permit a BCD digit to
be added to or subtracted from a second digit, such as in
the typical configurations in Figures 2 and 3. A second
MC14561B permits either digit to be added to or subtracted
from the other, or either word to appear unmodified at the
output.
ADD/SUBTRACT
ZERO
MC14561B
MC14560B
MC14561B
MC14560B
UNITS
TENS
B10
A10
B1
A1
A1
A2
A3
A4
COMP
COMP
Z
F1
F2
F3
F4
A1
A2
A3
A4
B1
B2
B3
Cin
S1
S2
S3
S4
Cout
A1
A2
A3
A4
COMP
COMP
Z
F1
F2
F3
F4
A1
A2
A3
A4
B1
B2
B3
Cin
S1
S2
S3
S4
Cout
B4
TRUTH TABLE
Zero
Add/Subtract
Result
0
0
B plus A
0
1
B minus A
1
X
B
X = Don’t Care
Figure 2. Parallel Add/Subtract Circuit (10’s Complement)
Summary of Contents for CMOS Logic
Page 1: ......
Page 5: ...iv MOTOROLA CMOS LOGIC DATA ...
Page 6: ...Master Index 1 ...
Page 12: ...Product Selection Guide 2 ...
Page 17: ...The Better Program 3 ...
Page 20: ...B and UB Series Family Data 4 ...
Page 25: ...CMOS Handling and Design Guidelines 5 ...
Page 32: ...CMOS Handling and Design Guidelines 5 ...
Page 39: ...Data Sheets 6 ...
Page 234: ...MOTOROLA CMOS LOGIC DATA MC14174B 6 196 FUNCTIONAL BLOCK DIAGRAM TIMING DIAGRAM ...
Page 238: ...MOTOROLA CMOS LOGIC DATA MC14175B 6 200 FUNCTIONAL BLOCK DIAGRAM TIMING DIAGRAM ...
Page 555: ...CMOS Reliability 7 ...
Page 561: ...Equivalent Gate Count 8 ...
Page 563: ...Packaging Information Including Surface Mounts 9 ...
Page 571: ......