mc14560b Freescale Semiconductor, Inc, mc14560b Datasheet - Page 4

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mc14560b

Manufacturer Part Number
mc14560b
Description
Nbcd Adder
Manufacturer
Freescale Semiconductor, Inc
Datasheet

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BCD digit to be added to or subtracted from
a second digit, such as in this typical config-
uration. A second MC14561B permits either
digit to be added to or subtracted from the
other, or either word to appear unmodified at
the output.
MC14560B
4
One MC14560B and MC14561B permit a
X = Don’t Care
Zero
0
0
1
C in
V DD = PIN 16
A1
B1
A2
B2
A3
B3
A4
B4
V SS = PIN 8
15
14
7
1
2
3
4
5
6
Add/Subtract
TRUTH TABLE
X
0
1
B minus A
B plus A
Result
B
FUNCTIONAL EQUIVALENT LOGIC DIAGRAM
Figure 3. Parallel Add/Subtract Circuit
ADD/SUBTRACT
ZERO
A10
B10
B1
A1
MC14561B
A1
A2
A3
A4
COMP
COMP
Z
MC14561B
A1
A2
A3
A4
COMP
COMP
Z
F1
F2
F3
F4
F1
F2
F3
F4
MOTOROLA CMOS LOGIC DATA
C in
A1
A2
A3
A4
B1
B2
B3
B4
C in
A1
A2
A3
A4
B1
B2
B3
B4
MC14560B
MC14560B
C out
C out
S1
S2
S3
S4
S1
S2
S3
S4
13
12
11
10
9
S1
S2
S3
S4
C out
UNITS
TENS

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