74LS257 TRI-STATE Quad 2-Data Selectors/Multiplexers

National Semiconductor

Description

54LS257A DM54LS257B DM74LS257B 54LS258A DM54LS258B DM74LS258B TRI-STATE Quad 2-Data Selectors Multiplexers June 1989 54LS257A DM54LS257B DM74LS257B .
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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Datasheet Specifications

Part number: 74LS257
Manufacturer: National Semiconductor
File Size: 163.71 KB
Datasheet: 74LS257_NationalSemiconductor.pdf
Description: TRI-STATE Quad 2-Data Selectors/Multiplexers

Features

* Y Y Y Y Y Y TRI-STATE versions LS157 and LS158 with same pinouts Schottky-clamped for significant improvement in A-C performance Provides bus interface from multiple sources in highperformance systems Average propagation delay from data input 12 ns Typical power dissipation LS257B 50 mW LS258B 3

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74LS257 TRI-STATE Quad 2-Data Selectors Multiplexers National Semiconductor

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