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TI(德州仪器) SN74ALS257A
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  • TI(德州仪器) SN74ALS257A
  • TI(德州仪器) SN74ALS257A
  • TI(德州仪器) SN74ALS257A
  • TI(德州仪器) SN74ALS257A
  • TI(德州仪器) SN74ALS257A
  • TI(德州仪器) SN74ALS257A
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SN74ALS257A

SN74ALS257A

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具有三态输出的四通道 2 线至 1 线数据选择器/多路复用器

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These data selectors/multiplexers are designed to multiplex signals from 4-bit data sources to 4-output data lines in bus-organized systems. The 3-state outputs do not load the data lines when the output-enable () input is at a high logic level.

The SN54ALS257A and SN54ALS258A are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS257A, SN74ALS258A, SN74AS257, and SN74AS258 are characterized for operation from 0°C to 70°C.

 

 

  • 3-State Outputs Interface Directly With System Bus
  • Provide Bus Interface From Multiple Sources in High-Performance Systems
  • Package Options Include Plastic Small-Outline (D) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs
Technology familyALS
FunctionDigital Multiplexer
Configuration2
Number of channels4
Operating temperature range (°C)0 to 70
RatingCatalog
PDIP (N)16181.42 mm² 19.3 x 9.4
SOIC (D)1659.4 mm² 9.9 x 6
SOP (NS)1679.56 mm² 10.2 x 7.8
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