SN54155, SN54156, SN54LS155A, SN54LS156,
SN74155, SN74156, SN74LS155A, SN74LS156
DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS
SDLS057 – MARCH 1974 – REVISED MARCH 1988
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Copyright 1988, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
SN54155, SN54156, SN54LS155A, SN54LS156,
SN74155, SN74156, SN74LS155A, SN74LS156
DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS
SDLS057 – MARCH 1974 – REVISED MARCH 1988
2POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54155, SN54156, SN54LS155A, SN54LS156,
SN74155, SN74156, SN74LS155A, SN74LS156
DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS
SDLS057 – MARCH 1974 – REVISED MARCH 1988
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54155, SN54156, SN54LS155A, SN54LS156,
SN74155, SN74156, SN74LS155A, SN74LS156
DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS
SDLS057 – MARCH 1974 – REVISED MARCH 1988
4POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54155A, SN74155A
DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS
SDLS057 – MARCH 1974 – REVISED MARCH 1988
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54LS155A, SN74LS155A
DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS
SDLS057 – MARCH 1974 – REVISED MARCH 1988
6POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54LS156A, SN74LS156A
DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS
SDLS057 – MARCH 1974 – REVISED MARCH 1988
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PACKAGE OPTION ADDENDUM
www.ti.com 5-Sep-2011
Addendum-Page 1
PACKAGING INFORMATION
Orderable Device Status (1) Package Type Package
Drawing Pins Package Qty Eco Plan (2) Lead/
Ball Finish MSL Peak Temp (3) Samples
(Requires Login)
5962-9750801Q2A ACTIVE LCCC FK 20 1 TBD Call TI Call TI
5962-9750801QEA ACTIVE CDIP J 16 1 TBD Call TI Call TI
5962-9750801QEA ACTIVE CDIP J 16 1 TBD Call TI Call TI
5962-9750801QFA ACTIVE CFP W 16 1 TBD Call TI Call TI
5962-9750801QFA ACTIVE CFP W 16 1 TBD Call TI Call TI
SN54155J OBSOLETE CDIP J 16 TBD Call TI Call TI
SN54155J OBSOLETE CDIP J 16 TBD Call TI Call TI
SN54LS155AJ ACTIVE CDIP J 16 1 TBD A42 N / A for Pkg Type
SN54LS155AJ ACTIVE CDIP J 16 1 TBD A42 N / A for Pkg Type
SN54LS156J ACTIVE CDIP J 16 1 TBD A42 N / A for Pkg Type
SN54LS156J ACTIVE CDIP J 16 1 TBD A42 N / A for Pkg Type
SN74155N OBSOLETE PDIP N 16 TBD Call TI Call TI
SN74155N OBSOLETE PDIP N 16 TBD Call TI Call TI
SN74155N3 OBSOLETE PDIP N 16 TBD Call TI Call TI
SN74155N3 OBSOLETE PDIP N 16 TBD Call TI Call TI
SN74156N OBSOLETE PDIP N 16 TBD Call TI Call TI
SN74156N OBSOLETE PDIP N 16 TBD Call TI Call TI
SN74LS155AD ACTIVE SOIC D 16 40 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS155AD ACTIVE SOIC D 16 40 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS155ADE4 ACTIVE SOIC D 16 40 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS155ADE4 ACTIVE SOIC D 16 40 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS155ADG4 ACTIVE SOIC D 16 40 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS155ADG4 ACTIVE SOIC D 16 40 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS155ADR ACTIVE SOIC D 16 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
PACKAGE OPTION ADDENDUM
www.ti.com 5-Sep-2011
Addendum-Page 2
Orderable Device Status (1) Package Type Package
Drawing Pins Package Qty Eco Plan (2) Lead/
Ball Finish MSL Peak Temp (3) Samples
(Requires Login)
SN74LS155ADR ACTIVE SOIC D 16 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS155ADRE4 ACTIVE SOIC D 16 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS155ADRE4 ACTIVE SOIC D 16 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS155ADRG4 ACTIVE SOIC D 16 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS155ADRG4 ACTIVE SOIC D 16 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS155AN ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type
SN74LS155AN ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type
SN74LS155ANE4 ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type
SN74LS155ANE4 ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type
SN74LS155ANSR ACTIVE SO NS 16 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS155ANSR ACTIVE SO NS 16 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS155ANSRE4 ACTIVE SO NS 16 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS155ANSRE4 ACTIVE SO NS 16 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS155ANSRG4 ACTIVE SO NS 16 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS155ANSRG4 ACTIVE SO NS 16 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS156D ACTIVE SOIC D 16 40 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS156D ACTIVE SOIC D 16 40 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS156DE4 ACTIVE SOIC D 16 40 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS156DE4 ACTIVE SOIC D 16 40 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
PACKAGE OPTION ADDENDUM
www.ti.com 5-Sep-2011
Addendum-Page 3
Orderable Device Status (1) Package Type Package
Drawing Pins Package Qty Eco Plan (2) Lead/
Ball Finish MSL Peak Temp (3) Samples
(Requires Login)
SN74LS156DG4 ACTIVE SOIC D 16 40 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS156DG4 ACTIVE SOIC D 16 40 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS156DR ACTIVE SOIC D 16 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS156DR ACTIVE SOIC D 16 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS156DRE4 ACTIVE SOIC D 16 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS156DRE4 ACTIVE SOIC D 16 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS156DRG4 ACTIVE SOIC D 16 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS156DRG4 ACTIVE SOIC D 16 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS156N ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type
SN74LS156N ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type
SN74LS156N3 OBSOLETE PDIP N 16 TBD Call TI Call TI
SN74LS156N3 OBSOLETE PDIP N 16 TBD Call TI Call TI
SN74LS156NE4 ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type
SN74LS156NE4 ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type
SN74LS156NSR ACTIVE SO NS 16 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS156NSR ACTIVE SO NS 16 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS156NSRE4 ACTIVE SO NS 16 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS156NSRE4 ACTIVE SO NS 16 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS156NSRG4 ACTIVE SO NS 16 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LS156NSRG4 ACTIVE SO NS 16 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SNJ54155J OBSOLETE CDIP J 16 TBD Call TI Call TI
PACKAGE OPTION ADDENDUM
www.ti.com 5-Sep-2011
Addendum-Page 4
Orderable Device Status (1) Package Type Package
Drawing Pins Package Qty Eco Plan (2) Lead/
Ball Finish MSL Peak Temp (3) Samples
(Requires Login)
SNJ54155J OBSOLETE CDIP J 16 TBD Call TI Call TI
SNJ54155W OBSOLETE CFP W 16 TBD Call TI Call TI
SNJ54155W OBSOLETE CFP W 16 TBD Call TI Call TI
SNJ54LS155AFK ACTIVE LCCC FK 20 1 TBD POST-PLATE N / A for Pkg Type
SNJ54LS155AFK ACTIVE LCCC FK 20 1 TBD POST-PLATE N / A for Pkg Type
SNJ54LS155AJ ACTIVE CDIP J 16 1 TBD A42 N / A for Pkg Type
SNJ54LS155AJ ACTIVE CDIP J 16 1 TBD A42 N / A for Pkg Type
SNJ54LS155AW ACTIVE CFP W 16 1 TBD A42 N / A for Pkg Type
SNJ54LS155AW ACTIVE CFP W 16 1 TBD A42 N / A for Pkg Type
SNJ54LS156FK OBSOLETE LCCC FK 20 TBD Call TI Call TI
SNJ54LS156FK OBSOLETE LCCC FK 20 TBD Call TI Call TI
SNJ54LS156J ACTIVE CDIP J 16 1 TBD A42 N / A for Pkg Type
SNJ54LS156J ACTIVE CDIP J 16 1 TBD A42 N / A for Pkg Type
SNJ54LS156W ACTIVE CFP W 16 1 TBD A42 N / A for Pkg Type
SNJ54LS156W ACTIVE CFP W 16 1 TBD A42 N / A for Pkg Type
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability
information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight
in homogeneous material)
(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
PACKAGE OPTION ADDENDUM
www.ti.com 5-Sep-2011
Addendum-Page 5
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
OTHER QUALIFIED VERSIONS OF SN54155, SN54LS155A, SN54LS156, SN74155, SN74LS155A, SN74LS156 :
•Catalog: SN74155, SN74LS155A, SN74LS156
•Military: SN54155, SN54LS155A, SN54LS156
NOTE: Qualified Version Definitions:
•Catalog - TI's standard catalog product
•Military - QML certified for Military and Defense Applications
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device Package
Type Package
Drawing Pins SPQ Reel
Diameter
(mm)
Reel
Width
W1 (mm)
A0
(mm) B0
(mm) K0
(mm) P1
(mm) W
(mm) Pin1
Quadrant
SN74LS155ADR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1
SN74LS155ANSR SO NS 16 2000 330.0 16.4 8.2 10.5 2.5 12.0 16.0 Q1
SN74LS156DR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1
SN74LS156NSR SO NS 16 2000 330.0 16.4 8.2 10.5 2.5 12.0 16.0 Q1
PACKAGE MATERIALS INFORMATION
www.ti.com 14-Jul-2012
Pack Materials-Page 1
*All dimensions are nominal
Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)
SN74LS155ADR SOIC D 16 2500 333.2 345.9 28.6
SN74LS155ANSR SO NS 16 2000 367.0 367.0 38.0
SN74LS156DR SOIC D 16 2500 333.2 345.9 28.6
SN74LS156NSR SO NS 16 2000 367.0 367.0 38.0
PACKAGE MATERIALS INFORMATION
www.ti.com 14-Jul-2012
Pack Materials-Page 2
IMPORTANT NOTICE
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other
changes to its semiconductor products and services per JESD46C and to discontinue any product or service per JESD48B. Buyers should
obtain the latest relevant information before placing orders and should verify that such information is current and complete. All
semiconductor products (also referred to herein as “components”) are sold subject to TI’s terms and conditions of sale supplied at the time
of order acknowledgment.
TI warrants performance of its components to the specifications applicable at the time of sale, in accordance with the warranty in TI’s terms
and conditions of sale of semiconductor products. Testing and other quality control techniques are used to the extent TI deems necessary
to support this warranty. Except where mandated by applicable law, testing of all parameters of each component is not necessarily
performed.
TI assumes no liability for applications assistance or the design of Buyers’ products. Buyers are responsible for their products and
applications using TI components. To minimize the risks associated with Buyers’ products and applications, Buyers should provide
adequate design and operating safeguards.
TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or
other intellectual property right relating to any combination, machine, or process in which TI components or services are used. Information
published by TI regarding third-party products or services does not constitute a license to use such products or services or a warranty or
endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the
third party, or a license from TI under the patents or other intellectual property of TI.
Reproduction of significant portions of TI information in TI data books or data sheets is permissible only if reproduction is without alteration
and is accompanied by all associated warranties, conditions, limitations, and notices. TI is not responsible or liable for such altered
documentation. Information of third parties may be subject to additional restrictions.
Resale of TI components or services with statements different from or beyond the parameters stated by TI for that component or service
voids all express and any implied warranties for the associated TI component or service and is an unfair and deceptive business practice.
TI is not responsible or liable for any such statements.
Buyer acknowledges and agrees that it is solely responsible for compliance with all legal, regulatory and safety-related requirements
concerning its products, and any use of TI components in its applications, notwithstanding any applications-related information or support
that may be provided by TI. Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards which
anticipate dangerous consequences of failures, monitor failures and their consequences, lessen the likelihood of failures that might cause
harm and take appropriate remedial actions. Buyer will fully indemnify TI and its representatives against any damages arising out of the use
of any TI components in safety-critical applications.
In some cases, TI components may be promoted specifically to facilitate safety-related applications. With such components, TI’s goal is to
help enable customers to design and create their own end-product solutions that meet applicable functional safety standards and
requirements. Nonetheless, such components are subject to these terms.
No TI components are authorized for use in FDA Class III (or similar life-critical medical equipment) unless authorized officers of the parties
have executed a special agreement specifically governing such use.
Only those TI components which TI has specifically designated as military grade or “enhanced plastic” are designed and intended for use in
military/aerospace applications or environments. Buyer acknowledges and agrees that any military or aerospace use of TI components
which have not been so designated is solely at the Buyer's risk, and that Buyer is solely responsible for compliance with all legal and
regulatory requirements in connection with such use.
TI has specifically designated certain components which meet ISO/TS16949 requirements, mainly for automotive use. Components which
have not been so designated are neither designed nor intended for automotive use; and TI will not be responsible for any failure of such
components to meet such requirements.
Products Applications
Audio www.ti.com/audio Automotive and Transportation www.ti.com/automotive
Amplifiers amplifier.ti.com Communications and Telecom www.ti.com/communications
Data Converters dataconverter.ti.com Computers and Peripherals www.ti.com/computers
DLP® Products www.dlp.com Consumer Electronics www.ti.com/consumer-apps
DSP dsp.ti.com Energy and Lighting www.ti.com/energy
Clocks and Timers www.ti.com/clocks Industrial www.ti.com/industrial
Interface interface.ti.com Medical www.ti.com/medical
Logic logic.ti.com Security www.ti.com/security
Power Mgmt power.ti.com Space, Avionics and Defense www.ti.com/space-avionics-defense
Microcontrollers microcontroller.ti.com Video and Imaging www.ti.com/video
RFID www.ti-rfid.com
OMAP Mobile Processors www.ti.com/omap TI E2E Community e2e.ti.com
Wireless Connectivity www.ti.com/wirelessconnectivity
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
Copyright © 2012, Texas Instruments Incorporated
