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Interruptores y multiplexores
Multiplexores y codificadores digitales

SN74S257

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SN74S257 está en proceso de ser discontinuado
Este producto está en proceso de ser suspendido. Los nuevos diseños deben considerar un producto alternativo.
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Pin por pin con la misma funcionalidad que el dispositivo comparado
CD74AC257 ACTIVO Multiplexores Quad de 2 entradas sin inversión con salidas de 3 estados Voltage range 2V to 6V, average propagation delay 7ns, average drive strength 24mA

SN74S257

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Detalles del producto

Technology family S Function Multiplexer Configuration 2:1 Number of channels 4 Operating temperature range (°C) 0 to 70 Rating Catalog
Technology family S Function 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)
  • Three-State Outputs Interface Directly with System Bus
  • 'LS257B and 'LS258B Offer Three Times the Sink-Current Capability of the Original 'LS257 and 'LS258
  • Same Pin Assignments as SN54LS157, SN74LS157, SN54S157, SN74S157, and SN54LS158, SN74LS158, SN54S158, SN74S158
  • Provides Bus Interface from Multiple Sources in High-Performance Systems

Off state (worst case)

 
  • Three-State Outputs Interface Directly with System Bus
  • 'LS257B and 'LS258B Offer Three Times the Sink-Current Capability of the Original 'LS257 and 'LS258
  • Same Pin Assignments as SN54LS157, SN74LS157, SN54S157, SN74S157, and SN54LS158, SN74LS158, SN54S158, SN74S158
  • Provides Bus Interface from Multiple Sources in High-Performance Systems

Off state (worst case)

 

These devices are designed to multiplex signals from four-bit data sources to four-output data lines in bus-organized systems. The 3-state outputs will not load the data lines when the output control pin (G\) is at a high-logic level.

Series 54LS and 54S are characterized for operation over the full military temperature range of -55°C to 125°C; Series 74LS and 74S are characterized for operation from 0°C to 70°C.

 

These devices are designed to multiplex signals from four-bit data sources to four-output data lines in bus-organized systems. The 3-state outputs will not load the data lines when the output control pin (G\) is at a high-logic level.

Series 54LS and 54S are characterized for operation over the full military temperature range of -55°C to 125°C; Series 74LS and 74S are characterized for operation from 0°C to 70°C.

 
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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos Quadruple 2-Line To 1-Line Data Selectors/Multiplexers datasheet 1/03/1988

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