mc14560b Freescale Semiconductor, Inc, mc14560b Datasheet
mc14560b
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mc14560b Summary of contents
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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 for no carry in ...
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... 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 – ...
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... V DD 90% 50% 10 PHL t PLH V OH 90% 50% 10 TLH t THL Figure 2. Switching Time Waveforms MC14560B ...
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... 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 ...
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... 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 ...
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... 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) ...
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... 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 ...
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... 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. ...
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... Figure 8. Sign and Magnitude Adder/Subtracter with Overflow MOTOROLA CMOS LOGIC DATA MC14560B 9 ...
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... 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 “ ...
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... SGN = out ) + out ) = out ) 0 EAC Sign (SGN) Overflow (OVF out out = OVF MC14560B 11 ...
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... 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 ...
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... 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 ...