54LS258A, 54LS257A TRI-STATE Quad 2-Data Selectors/Multiplexers

National Semiconductor

Description

Obsolete 54LS257A DM54LS257B DM74LS257B 54LS258A DM54LS258B DM74LS258B TRI-STATE Quad 2-Data Selectors Multiplexers June 1989 54LS257A DM54LS257B D.
These Schottky-clamped high-performance multiplexers feature TRI-STATE outputs that can interface directly with data lines of bus-organized systems Wi.

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54LS258A Datasheet Preview — This datasheet PDF includes multiple part numbers: 54LS258A, 54LS257A. Please refer to the document for exact specifications by model.

Datasheet Specifications

Part number: 54LS258A, 54LS257A
Manufacturer: National Semiconductor
File Size: 360.47 KB
Datasheet: 54LS257A-NationalSemiconductor.pdf
Description: TRI-STATE Quad 2-Data Selectors/Multiplexers
Note: This datasheet PDF includes multiple part numbers: 54LS258A, 54LS257A.
Please refer to the document for exact specifications by model.

Features

* Y TRI-STATE versions LS157 and LS158 with same pinouts Y Schottky-clamped for significant improvement in A-C performance Y Provides bus interface from multiple sources in highperformance systems Y Average propagation delay from data input 12 ns Y Typical power dissipation LS257B 50 mW LS258B 35 mW Y

54LS258A Distributors

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54LS257A TRI-STATE Quad 2-Data Selectors Multiplexers National Semiconductor

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