SN54LS257B - Quadruple 2-Line To 1-Line Data Selectors/Multiplexers

Updated : 2020-01-09 14:42:43
Description

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.

 

Products containing the "SN54LS257B" keyword are: SN54LS257BJ
Features

  • 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)

 

Parametrics
StatusACTIVE
SubFamilyEncoders & decoders
Technology FamilyLS
VCC5.5
Bits2
Voltage5
F @ nom voltage35
ICC @ nom voltage19
tpd @ Nom Voltage21
RatingMilitary
Operating temperature range-55 to 125
Package GroupCDIP|16
Package size: mm2:W x L (PKG)See datasheet (CDIP)
Approx. price
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