If you wish to create a 16 bit magnitude comparator, the other 7485 connects to the least significant byte lsb. Switching characteristics at v cc e 5v and t a e 25 c see section 1 for test waveforms and output loadfromtonumber ofrl e 2kxsymbolparameterinputoutputgate levels. Com is the biggest online electronic component datasheets search engine. This applet shows the internal gatelevel circuit used in the ttlseries 7485 4bit magnitude comparator ics. Operational amplifiers are well described in many publications and a lot of information can. Absolute maximum ratings noteif militaryaerospace specified devices are requiredplease contact the national semiconductor salesofficedistributors for availability and specificationssupply voltage7vinput voltage7voperating free air temperature rangedm54ls and 54ls datasheet search, datasheets, datasheet search site for electronic components and semiconductors, integrated circuits, diodes and. Three fully decoded decisions are externally available at three outputs. Dm74ls153 dual 1of4 line data selectorsmultiplexers physical dimensions inches millimeters unless otherwise noted continued 16lead plastic dualinline package pdip, jedec ms001, 0. They perform comparison of two 4bit binary, bcd or other monotonic codes and present the three possible magnitude results at the outputs qab, qab and qa comparator physical dimensions inches millimeters unless otherwise noted continued 16lead plastic dualinline package pdip, jedec ms001, 0. Logic diagramtlf6379 24 datasheet search, datasheets, datasheet search site for electronic components and semiconductors, integrated circuits, diodes and other semiconductors. Three fullydecoded decisions about two, 4bit words a, b are made and are externally available at three outputs. These 4bit magnitude comparators perform comparison of straight binary or.
The cascading inputs come from the outputs of another 7485. Words of greater length may be compared by connecting comparators in cascade. B, a b that permit systems designers to expand the comparator function to 8, 12, 16. Braze seal dip h4t frit seal dip h1e ceramic flatpack h6w december 1992 file number 3318.
Dm7485 pdf, dm7485 description, dm7485 datasheets, dm7485. Magnitude comparator a magnitude comparator is a digital comparator which has three output terminals, one each for equality, a b greater than, a b and less than a comparator is to compare a set of variables or unknown numbers, for example a. Ti 4bit magnitude comparators,alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. The cd4063bms is supplied in these 16 lead outline packages. Combine all the 0s to obtain the simplified function for f. As for the last line of the truth table, the outputs indicate that the a inputs are simultaneously greater and less than the b inputs, which is contradictory. Digital electronic circuit is classified into combinational logic and sequential logic. This logic circuit determines whether one 4bit word binary or bcd is less than, equal to, or greater than a second 4bit word. Tlf6379june 198954ls85dm54ls85dm74ls854bit magnitude comparatorsgeneral descriptionthese 4bit magnitude comparators perform comparison ofstraight binary or bcd codes three fullydecoded decisionsabout two 4bit words a b are made and are externallyavailable at three outputs these devices are fully expandable to any number of bits without external gates words of datasheet. A magnitude digital comparator is a combinational circuit that compares two digital or binary numbers consider a and b and determines their relative magnitudes in order to find out whether one number is equal, less than or. Dm74ls153 dual 1of4 line data selectorsmultiplexers. Some comparators combine a tree structure with a two phase domino. Ti, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors.
Recent listings manufacturer directory get instant insight into any electronic component. Nsc, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. They perform comparison of two 4bit binary, bcd or other monotonic codes and present the three possible magnitude results at the outputs qab, qaband qa. The 74hchct85 are 4bit magnitude comparators that can be expanded to almost any length. Digital comparator and magnitude comparator tutorial. Sn7485n pdf, sn7485n description, sn7485n datasheets. Introduction to comparators, their parameters and basic applications by radim smat introduction after operational amplifiers op amps, comparators are the most generally used analog, simple integrated circuits. This document has been prepared to serve as a laboratory manual for ee 200 digital. Dm5485idm7485 sn5485sn7485 4blt magnitude comparator. These 4bit magnitude comparators perform comparison of straight binary or bcd codes three fullydecoded decisions about two 4bit words a b are made. In the first level of logic, using the nand and andorinvert gates, the corresponding bits of the a and b inputs are compared.
These devices are fully expandable to any number of bits without external gates. It accepts two 4bit binary words a1a4, b1b4 and a carry input c 0. Three fullydecoded deci datasheet search, datasheets, datasheet search site for electronic components and semiconductors, integrated circuits, diodes and other semiconductors. Refer datasheet for the input and output pin numbers of the ic. These fourbit magnitude comparators perform comparison of straight binary and straight bcd 8421 codes. Recent listings manufacturer directory get instant insight into any electronic. Comparing two nbit words l low level h high level a0 a1 a2 a3 b0 b1 b2 b3. Moreover, the inputs of the device can be isolated from system ground while the. Ordering information see general marking information in the device marking. Dm7485 datasheet, dm7485 datasheets, dm7485 pdf, dm7485 circuit. Phase comparators the signal input sigin can be directly coupled to the selfbiasing ampli.
Nsc 4bit magnitude comparators,alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. This device is pincompatible with the standard 7485 ttl type. Lm211, lm311 single comparators the ability to operate from a single power supply of 5. The least significant or only comparator in a chain should have i a b tied low and i ab tied high. Absolute maximum ratings noteif militaryaerospace specified devices are requiredplease contact the national semiconductor salesofficedistributors for availability and specificationssupply voltage7vinput voltage7voperating free air temperature rangedm54ls and 54ls datasheet search, datasheets, datasheet search site for electronic components and.
Cd4063b is a 4bit magnitude comparator designed for use in computer and logic applications that require the comparison of two 4bit words. These 4bit magnitude comparators perform comparison of. Tlf6379june 198954ls85dm54ls85dm74ls854bit magnitude comparatorsgeneral descriptionthese 4bit magnitude comparators perform comparison ofstraight binary or bcd codes three fullydecoded decisionsabout two 4bit words a b are made and are externallyavailable at three outputs these devices are fully expandable to any number of bits without external gates words of datasheet search. Mm74c85 4bit magnitude comparator mm74c85 4bit magnitude comparator general description the mm74c85 is a fourbit magnitude comparator which will perform comparison of straight binary or bcd codes. An important notice at the end of this data sheet addresses availability, warranty, changes, use in safetycritical applications, intellectual property matters and other important disclaimers. Operation is not restricted to binary codes, the device will work with any monotonic code. How many ic 7485 required to design 24 bit comparator. Nsc, alldatasheet, datasheet, datasheet search site for electronic components. Sn7485 datasheet, sn7485 datasheets, sn7485 pdf, sn7485 circuit. Sn7485 pdf, sn7485 description, sn7485 datasheets, sn7485. Introduction to comparators, their parameters and basic. Phase comparator 1 pc1 this is an exclusiveor network. The circuit consists of eight comparing inputs a0, a1, a2, a3, b0, b1, b2, b3, three cascading inputs a b, a 7485 datasheet, 7485 datasheets, 7485 pdf, 7485 circuit.
To compare more than 4 bits, connect the outputs to the expansion inputs of the next significant comparator. Sn7485n datasheet, sn7485n datasheets, sn7485n pdf, sn7485n circuit. Lessons in electric circuits, volume iv digital ibiblio. Photograph features compares 4bit binary or bcd codes and outputs greater, less than or equal. Furthermore, the cadence data sheet reported in 24, 38 show that the. Fairchild reserves the right at any time without notice to change said circuitry and specifications. Cmos gate circuits have input and output signal specifications that are quite different. Products conform to specifications per the terms of texas instruments standard warranty.
1516 997 997 324 439 373 809 346 741 791 916 582 385 14 1500 905 84 1545 841 871 1267 1321 1472 438 1607 1446 868 909 726 1067 492 621 1219 60 215 1073 413 1005 519 799 1083 1118 1356 1031 1044 619