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Technology family AS Function Digital Multiplexer Configuration 2:1 Number of channels 4 Operating temperature range (°C) 0 to 70 Rating Catalog
Technology family AS Function Digital Multiplexer Configuration 2:1 Number of channels 4 Operating temperature range (°C) 0 to 70 Rating Catalog
PDIP (N) 16 181.42 mm² (19.3 mm × 9.4 mm) SOIC (D) 16 59.4 mm² (9.9 mm × 6 mm) SOP (NS) 16 79.56 mm² (10.2 mm × 7.8 mm)
  • 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
  • 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

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.

 

 

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.

 

 

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비교 대상 장치와 동일한 기능을 지원하는 핀 대 핀.
SN74HC257 활성 3상 출력을 지원하는 쿼드러플 2라인-1라인 데이터 선택기/멀티플렉서 Voltage range 2V to 6V, average propagation delay 20ns, average drive strength 8mA
CD74AC257 활성 3상 출력을 지원하는 쿼드 2입력 비인버팅 멀티플렉서 Voltage range 2V to 6V, average propagation delay 7ns, average drive strength 24mA

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* 데이터 시트 Quad 2-Line To 1-Line Data Selectors/Multiplexers With 3-State Outputs datasheet (Rev. C) 1996. 8. 1

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