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Product details

Parameters

Technology Family ALS Function Encoder/Multiplexer Configuration 2:1 Channels (#) 4 VCC (Min) (V) 4.5 VCC (Max) (V) 5.5 Input type TTL Output type TTL open-in-new Find other Encoders & decoders

Package | Pins | Size

CDIP (J) 16 135 mm² 19.65 x 6.92 open-in-new Find other Encoders & decoders

Features

  • 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
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Description

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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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet Quad 2-Line To 1-Line Data Selectors/Multiplexers With 3-State Outputs datasheet (Rev. C) Aug. 01, 1996
* SMD SN54ALS258A SMD 5962-88626 Jun. 21, 2016
Selection guide Logic Guide (Rev. AB) Jun. 12, 2017
Application note Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) Dec. 02, 2015
User guide LOGIC Pocket Data Book (Rev. B) Jan. 16, 2007
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection Jul. 08, 2004
More literature Logic Cross-Reference (Rev. A) Oct. 07, 2003
Application note TI IBIS File Creation, Validation, and Distribution Processes Aug. 29, 2002
Application note Bus-Interface Devices With Output-Damping Resistors Or Reduced-Drive Outputs (Rev. A) Aug. 01, 1997
Application note Designing With Logic (Rev. C) Jun. 01, 1997
Application note Input and Output Characteristics of Digital Integrated Circuits Oct. 01, 1996
Application note Live Insertion Oct. 01, 1996
Application note Advanced Schottky (ALS and AS) Logic Families Aug. 01, 1995

Design & development

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CAD/CAE symbols

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CDIP (J) 16 View options

Ordering & quality

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