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DM9334N
8-Bit Addressable Latch
TL/F/6609
9334/DM9334
8-Bit
Addressable
Latch
June 1989
9334/DM9334 8-Bit Addressable Latch
General Description
The DM9334isa high speed 8-bit Addressable Latchde-
signedfor general purpose storage applicationsin digital
systems.Itisa multifunctional device capableofstoringsin-
gleline datain eight addressable latches,and beinga one-
of-eight decoder and demultiplexer with active level high
outputs. The device also incorporatesan active levellow
common clearfor resettingall latches,as wellasan active
levellow enable.
The DM9334hasfour modesof operation whichare shownthe mode selection table.Inthe addressable latch mode,
dataonthe dataline(D)is writtenintothe addressed latch.
The addressed latchwill followthe data input withall non-
addressed latches remainingin their previous states.Inthe
memory mode,all latches remain intheir previous stateand
are unaffectedbythe dataor address inputs.the one-of-eight decodingor demultiplexing mode,the
addressed outputwill followthe stateoftheD input withall
other inputsinthelow state.Inthe clear modeall outputs
arelowand unaffectedbythe addressand data inputs.
When operatingthe deviceasan addressable latch, chang-
ing more thanonebitofthe address could imposea tran-
sient wrong address. Therefore,this should onlybe done
whileinthe memory mode.
The function tables summarizethe operation ofthe product.
Features Common clear Easily expandable Random (addressable) data entry Serialto parallel capability8bitsof storage/outputof eachbit available Active high demultiplexing/decoding capability Alternate Military/Aerospace device (9334)is available.
Contacta National Semiconductor Sales Office/Distrib-
utorfor specifications.
Connection Diagram
Dual-In-Line Package
TL/F/6609–1
Order Number 9334DMQB, 9334FMQB, DM9334Jor DM9334N
SeeNS PackageNumberJ16A, N16Eor W16A
C1995National SemiconductorCorporation RRD-B30M105/PrintedinU.S.A.
