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SOP (NS)

SN74LS155ANSR

Active
Texas Instruments

DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS

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SOP (NS)

SN74LS155ANSR

Active
Texas Instruments

DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS

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Description

General part information

SN74LS155A Series

These monolithic transistor-transistor-logic (TTL) circuits feature dual 1-line-to-4-line demultiplexers with individual strobes and common binary-address inputs in a single 16-pin package. When both sections are enabled by the strobes, the common binary-address inputs sequentially select and route associated input data to the appropriate output of each section. The individual strobes permit activating or inhibiting each of the 4-bit sections as desired. Data applied to input 1C is inverted at its outputs and data applied at 2C\ is not inverted through its outputs. The inverter following the 1C data input permits use as a 3-to-8-line decoder or 1-to-8-line demultiplexer without external gating. Input clamping diodes are provided on all of these circuits to minimize transmission-line effects and simplify system design.

These monolithic transistor-transistor-logic (TTL) circuits feature dual 1-line-to-4-line demultiplexers with individual strobes and common binary-address inputs in a single 16-pin package. When both sections are enabled by the strobes, the common binary-address inputs sequentially select and route associated input data to the appropriate output of each section. The individual strobes permit activating or inhibiting each of the 4-bit sections as desired. Data applied to input 1C is inverted at its outputs and data applied at 2C\ is not inverted through its outputs. The inverter following the 1C data input permits use as a 3-to-8-line decoder or 1-to-8-line demultiplexer without external gating. Input clamping diodes are provided on all of these circuits to minimize transmission-line effects and simplify system design.

Technical Specifications

Parameters and characteristics for this part

SpecificationSN74LS155ANSR
Circuit1 x 2:4
Current - Output High400 µA
Current - Output Low8 mA
Independent Circuits2
Mounting TypeSurface Mount
Operating Temperature (Max)70 °C
Operating Temperature (Min)0 °C
Package Length0.209 in
Package Name16-SO, 16-SOIC
Package Width5.3 mm
TypeDecoder/Demultiplexer
Voltage - Supply (Maximum)5.25 V
Voltage - Supply (Minimum)4.75 V
Voltage Supply SourceSingle Supply

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CAD

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