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DM7485NNSN/a415avai4-Bit Magnitude Comparators
5485DMQBFN/a25avai4-Bit Magnitude Comparators


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5485DMQB-DM7485N
4-Bit Magnitude Comparators
TL/F/6530
5485/DM5485/DM7485
4-Bit
Magnitude
Comparators
June 1989
5485/DM5485/DM7485
4-Bit Magnitude Comparators
General Description
These 4-bit magnitude comparators perform comparisonof
straight binaryor BCD codes. Three fully-decoded decisions
abouttwo 4-bit words(A,B)are madeandare externally
availableat three outputs. These devicesare fully expand-
abletoany numberofbits without external gates. Wordsof
greater length maybe comparedby connecting compara-
torsin cascade.TheAlB,AkB,andAeB outputsofa
stage handling less-significant bitsare connectedto thecor-
responding inputsofthe next stage handling more-signifi-
cant bits.The stage handlingthe least-significantbits must
havea high-level voltage appliedtotheAeB input. The
cascading pathsare implemented withonlya two-gate-level
delayto reduce overall comparison timesfor long words.
Features Typical power dissipation 275mW Typical delay (4-bit words)23ns Alternate Military/Aerospace device (5485)is available.
Contacta National Semiconductor Sales Office/Distrib-
utorfor specifications.
Connection Diagram
Dual-In-Line Package
TL/F/6530–1
Order Number 5485DMQB, 5485FMQB,DM5485J, DM5485Wor DM7485N
SeeNS PackageNumberJ16A, N16Eor W16A
C1995National SemiconductorCorporation RRD-B30M105/PrintedinU.S.A.
ic,good price


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