mc14560b Freescale Semiconductor, Inc, mc14560b Datasheet

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mc14560b

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

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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
NBCD Adder
decimal) format, resulting in sum and carry outputs in NBCD code.
a 9’s Complementer (MC14561B).
significant digit is connected to V SS for no carry in.
* Maximum Ratings are those values beyond which damage to the device may occur.
†Temperature Derating:
* Partial truth table to show logic operation for representative input values.
REV 3
REV 0
1/94
1/94
MAXIMUM RATINGS*
V in , V out
A4
Symbol
MOTOROLA CMOS LOGIC DATA
I in , I out
0
0
0
0
0
0
1
0
1
The MC14560B adds two 4–bit numbers in NBCD (natural binary coded
This device can also subtract when one set of inputs is complemented with
All inputs and outputs are active high. The carry input for the least
Motorola, Inc. 1995
Motorola, Inc. 1994
V DD
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
T stg
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
level (e.g., either V SS or V DD ). Unused outputs must be left open.
P D
T L
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
A3
This device contains protection circuitry to guard against damage
Unused inputs must always be tied to an appropriate logic voltage
0
0
1
1
1
1
0
1
0
DC Supply Voltage
Input or Output Voltage (DC or Transient)
Input or Output Current (DC or Transient),
per Pin
Power Dissipation, per Package†
Storage Temperature
Lead Temperature (8–Second Soldering)
A2
0
0
0
0
1
1
0
1
0
A1
0
0
0
0
1
1
0
0
1
Input
B4
0
0
0
0
0
0
0
1
1
(Voltages Referenced to V SS )
Parameter
B3
0
0
0
0
1
1
1
0
0
TRUTH TABLE*
B2
0
0
1
1
0
0
0
0
0
B1
0
0
1
1
0
0
1
0
1
C in
0
1
0
1
0
1
0
0
1
C out
(V in or V out )
0
0
0
0
1
1
1
1
1
– 0.5 to V DD + 0.5
– 0.5 to + 18.0
– 65 to + 150
S4
0
0
0
1
0
0
0
0
1
Value
500
260
Output
10
S3
0
0
1
0
0
0
0
1
0
V DD .
S2
0
0
1
0
0
1
1
0
0
Unit
mW
mA
_ C
_ C
V
V
S1
0
1
1
0
1
0
1
0
1
T A = – 55 to 125 C for all packages.
ORDERING INFORMATION
MC14XXXBCP
MC14XXXBCL
MC14XXXBD
MC14560B
15
14
7
1
2
3
4
5
6
BLOCK DIAGRAM
See Page 398
MC14559B
V DD = PIN 16
C in
A1
B1
A2
B2
A3
B3
A4
B4
V SS = PIN 8
C out
S1
S2
S3
S4
CASE 751B
CERAMIC
CASE 620
CASE 648
D SUFFIX
L SUFFIX
P SUFFIX
PLASTIC
Plastic
Ceramic
SOIC
SOIC
MC14560B
13
12
11
10
9
1

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mc14560b Summary of contents

Page 1

... 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 for no carry in ...

Page 2

... The formulas given are for the typical characteristics only †To calculate total supply current at loads other than 50 pF (50 pF – 50) Vfk where (per package pF – volts kHz is input frequency, and k = 0.005. MC14560B 2 (Voltages Referenced – ...

Page 3

... V DD 90% 50% 10 PHL t PLH V OH 90% 50% 10 TLH t THL Figure 2. Switching Time Waveforms MC14560B ...

Page 4

... PIN PIN 8 One MC14560B and MC14561B permit a 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 ...

Page 5

... This End Around Carry is required because subtrac- tion is done in 9’s complement arithmetic. By controlling the complement and overflow logic with an add/subtract line, both addition and subtraction are per- formed using the basic subtracter blocks (Figure 4 – – – – 1 MC14560B 5 ...

Page 6

... BIT BINARY FULL ADDER C in BINARY TO NBCD C out CODE CONVERTER RESULT, R (a) MC14560 Block Diagram Figure 5. Addition of Unsigned NBCD Numbers MC14560B 6 ADDITION AND SUBTRACTION OF SIGNED NBCD NUMBERS Corrected Binary Sums Using MC14560 NBCD Adders and MC14561 9’s Comple- 0000 menters, a sign and magnitude adder/subtracter can be con- 0001 figured (Figure 5) ...

Page 7

... MC14561 RESULT, R (a) Basic Subtracter Block MOST SIGNIFICANT DECADE out (b) n–Decade Subtracter out out R n “0” INDICATES UNDERFLOW (NEGATIVE RESULT) MC14560B 7 ...

Page 8

... SUBTRACT C BLOCK R1 ADD/SUBTRACT (“1”/“0”) Figure 7. Adder/Subtracter for Unsigned NBCD Numbers MC14560B 8 REFERENCES 1. Chu, Y.: Digital Computer Design Fundamentals , New York, McGraw–Hill, 1962. 2. McMOS Handbook , Motorola Inc., 1st Edition. 3. Beuscher, H.: Electronic Switching Theory and Circuits , New York, Van Nostrand Reinhold, 1971. ...

Page 9

... Figure 8. Sign and Magnitude Adder/Subtracter with Overflow MOTOROLA CMOS LOGIC DATA MC14560B 9 ...

Page 10

... R = – A – (10 N – 1 – – Output of Adders Figure 9. Truth Table Generation for EAC, Sign, and Overflow Logic MC14560B 10 for R* (Result Modulus Modulus End Around Carry (EAC) Carry (EAC) Magnitudes) Magnitudes) Magnitudes) “1” = EAC “ ...

Page 11

... SGN = out ) + out ) = out ) 0 EAC Sign (SGN) Overflow (OVF out out = OVF MC14560B 11 ...

Page 12

... 0.25 (0.010 –A– 0.25 (0.010) M MC14560B 12 OUTLINE DIMENSIONS L SUFFIX CERAMIC DIP PACKAGE CASE 620–10 ISSUE V –B– 0.25 (0.010 SUFFIX PLASTIC DIP PACKAGE CASE 648–08 ...

Page 13

... IN EXCESS OF THE D DIMENSION AT MAXIMUM MATERIAL CONDITION. MILLIMETERS INCHES DIM MIN MAX MIN MAX A 9.80 10.00 0.386 0.393 B 3.80 4.00 0.150 0.157 C 1.35 1.75 0.054 0.068 D 0.35 0.49 0.014 0.019 F 0.40 1.25 0.016 0.049 G 1.27 BSC 0.050 BSC J 0.19 0.25 0.008 0.009 K 0.10 0.25 0.004 0.009 5.80 6.20 0.229 0.244 R 0.25 0.50 0.010 0.019 are registered MC14560B MC14560B/D 13 ...

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