DM74LS155M ,Dual 2-Line to 4-Line Decoders/DemultiplexersApplications:These TTL circuits feature dual 1-line-to-4-line demultiplex-Dual 2-to-4-line decodere ..
DM74LS155MX , Dual 2-Line to 4-Line Decoder/1-to-4 Line DemultiplexerApplications:ers with individual strobes and common binary-addressDual 2-to-4-line decoderinputs in ..
DM74LS155N ,Dual 2-Line to 4-Line Decoders/DemultiplexersApplications:
ers with individual strobes and common binary-address in- Dual 2-to-4-Iine decoder ..
DM74LS156M ,Dual 2-Line to 4-Line Decoders/DemultiplexersFeaturesThese TTL circuits feature dual 1-line-to-4-line demultiplex-
DM74LS156MX , Dual 2-Line to 4-Line Decoder/1-to-4 Line Demultiplexer with Open-Collector OutputsApplications:ers with individual strobes and common binary-addressDual 2-to-4-line decoderinputs in ..
DM74LS156MX , Dual 2-Line to 4-Line Decoder/1-to-4 Line Demultiplexer with Open-Collector OutputsDM74LS155 • DM74LS156 Dual 2-Line to 4-Line Decoders/DemultiplexersAugust 1986Revised April 2000DM7 ..
DS21554LBN+ ,3.3V/5V E1 Single Chip Transceivers (SCT)Applications meet all the latest E1 specifications, including ITU-T Fully Independent Transmit an ..
DS21554LN ,3.3V/5V E1 Single-Chip TransceiversTABLE OF CONTENTS 1. INTRODUCTION...... 6 1.1.
DS21554LN ,3.3V/5V E1 Single-Chip TransceiversBLOCK DIAGRAM .. 9 3.
DS21554LN+ ,3.3V/5V E1 Single Chip Transceivers (SCT)FUNCTIONAL DESCRIPTION7 1.2. DOCUMENT REVISION HISTORY .8 2.
DS2155GNB+ ,T1/E1/J1 Single-Chip TransceiverFEATURES The DS2155 is a software-selectable T1, E1, or J1 Complete T1/DS1/ISDN-PRI/J1 Transceiver ..
DS2155GNC2 ,T1/E1/J1 Single-Chip TransceiverTABLE OF CONTENTS .......2 1.1 TABLE OF FIGURES .6 1.2 TABLE OF TABLES...7 2. DATA SHEET REVISION H ..
DM54LS155J-DM74LS155M
Dual 2-Line to 4-Line Decoders/Demultiplexers
TL/F/6395
54LS155/DM54LS155/DM74LS155,
54LS156/DM54LS156/DM74LS156
Dual
2-Line
4-Line
Decoders/Demultiplexers
June 1989
54LS155/DM54LS155/DM74LS155,
54LS156/DM54LS156/DM74LS156
Dual 2-Line to 4-Line Decoders/Demultiplexers
General Description
TheseTTL circuits feature dual 1-line-to-4-line demultiplex-
ers with individual strobes and common binary-addressin-
putsina single 16-pin package. When both sectionsare
enabledbythe strobes,the common address inputsse-
quentially selectand route associated input datatotheap-
propriate outputof each section.The individual strobesper-
mit activatingor inhibiting eachofthe 4-bit sectionsasde-
sired. Data appliedto inputC1is invertedatits outputsand
data appliedatC2is true throughits outputs.The inverter
followingtheC1 data input permitsuseasa 3-to-8-linede-
coder,or 1-to-8-line demultiplexer, without external gating.
Input clamping diodesare providedon these circuitsto mini-
mize transmission-line effectsand simplify system design.
Features Applications:
Dual 2-to-4-line decoder
Dual 1-to-4-line demultiplexer
3-to-8-line decoder
1-to-8-line demultiplexer Individual strobes simplify cascadingfor decodingor
demultiplexing larger words Input clamping diodes simplify system design Choiceof outputs:
Totem-pole (LS155)
Open-collector (LS156) Alternate Military/Aerospace device (54LS155/156)is
available. Contacta National Semiconductor SalesOf-
fice/Distributorfor specifications.
Connection Diagram and Function Tables
Dual-In-Line Package
TL/F/6395–1
3-Line-to-8-LineDecoderor
1-Line-to-8-Line Demultiplexer
Inputs Outputs
Select Strobe (0) (1) (2) (3) (4) (5) (6) (7)Or Data BA G³ 2Y0 2Y1 2Y2 2Y3 1Y0 1Y1 1Y2 1Y3XX H HHHHHHHHLL L L H HHHHHHLH L H L HHHHHHHL L HH L HHHHHHH L HHH L HHHHLL L HHHH L HHHLH L HHHHH L H HHL L HHHHHH L HHH L HHHHHHH L
Order Number 54LS155DMQB, 54LS155FMQB,
54LS155LMQB, DM54LS155J, DM54LS155W,
DM74LS155M, DM74LS155N, 54LS156DMQB,
54LS156FMQB, DM54LS156J, DM54LS156W,
DM74LS156Mor DM74LS156N
SeeNS Package Number E20A, J16A,
M16A,N16EorW16A
2-Line-to-4-Line Decoderor
1-Line-to-4-Line Demultiplexer
Inputs Outputs
Select Strobe Data A G1 C1 1Y0 1Y1 1Y2 1Y3 X H X HHHH L L H L HHH H L H HLH H L L H H HLH H L H HHH L X X L HHHH
Inputs Outputs
Select Strobe Data A G2 C2 2Y0 2Y1 2Y2 2Y3 X H X HHHH L L L L HHH H L L HLH H L L L H HLH H L L HHH L X X H HHHHe inputsC1and C2connected togethere inputsG1andG2 connected togetherehigh level,Lelow level,Xe don’tcare
C1995National SemiconductorCorporation RRD-B30M105/PrintedinU.S.A.
