Manufacturer: National Semiconductor (now Texas Instruments)
Download the DM74LS257 datasheet PDF.
This datasheet also includes the DM74LS258 variant, as both parts are published together in a single manufacturer document.
Note: The manufacturer provides a single datasheet file (DM74LS258_NationalSemiconductor.pdf) that lists specifications for multiple related part numbers.
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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 35 mW Alternate military aerospace devices (54LS257A 54LS258A) are available Contact a National Semiconductor Sales Office Distributor for specifications
Connection Diagrams
Dual-In-Line Package Dual-.
