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DM74LS157CW Datasheet PDF - Fairchild

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Part NumberDM74LS157CW Fairchild
Fairchild Semiconductor Fairchild
DescriptionQuad 2-Line to 1-Line Data Selectors/Multiplexers
DM74LS157CW Datasheet PDF : DM74LS157CW pdf   
DM74LS157 image

General Description
These data selectors/multiplexers contain inverters and drivers to supply full on-chip data selection to the four output gates. A separate strobe input is provided. A 4-bit word is selected from one of two sources and is routed to the four outputs. The DM74LS157 presents true data where as the DM74LS158 presents inverted data to minimize propagation delay time.

Features
■ Buffered inputs and outputs
■ Typical Propagation Time
   DM74LS157 9 ns
   DM74LS158 7 ns
■ Typical Power Dissipation
   DM74LS157 49 mW
   DM74LS158 24 mW

Applications
• Expand any data input point
• Multiplex dual data buses
• Generate four functions of two variables (one variable is common)
• Source programmable counters

 

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