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DM74LS154 Datasheet PDF - National ->Texas Instruments

Part NumberDM74LS154 National-Semiconductor
National ->Texas Instruments National-Semiconductor
Description4-Line to 16-Line Decoders/Demultiplexers
DM74LS154 Datasheet PDF : DM74LS154 pdf   
DM54LS154 image

General Description
Each of these 4-line-to-16-line decoders utilizes TTL circuit ry to decode four binary-coded inputs into one of sixteen mutually exclusive outputs when both the strobe inputs, G1 and G2, are low. The demultiplexing function is performed by using the 4 input lines to address the output line, passing data from one of the strobe inputs with the other strobe input low. When either strobe input is high, all outputs are high. These demultiplexers are ideally suited for implement ing high-performance memory decoders. All inputs are buffered and input clamping diodes are provided to minimize transmission-line effects and thereby simplify system design.

Features
■ Decodes 4 binary-coded inputs into one of 16 mutually
   exclusive outputs
■ Performs the demultiplexing function by distributing data
   from one input line to any one of 16 outputs
■ Input clamping diodes simplify system design
■ High fan-out, low-impedance, totem-pole outputs
■ Typical propagation delay
   3 levels of logic 23 ns
   Strobe 19 ns
■ Typical power dissipation 45 mW

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