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DM74LS155 Datasheet PDF - National-Semiconductor

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Part NumberDM74LS155 National-Semiconductor
National ->Texas Instruments National-Semiconductor
DescriptionDual 2-Line to 4-Line Decoders/Demultiplexers
DM74LS155 Datasheet PDF : DM74LS155 pdf   
74LS155 image

General Description
These 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 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 C1 is inverted at its outputs and data applied at C2 is true through its outputs. The inverter following the C1 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 these circuits to mini
mize transmission-line effects and simplify system design.

   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 cascading for decoding or demultiplexing larger words
Input clamping diodes simplify system design
Choice of outputs:
   Totem-pole (LS155)
   Open-collector (LS156)

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