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DM74LS257BN

  • Available: 12684

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  • esd
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Description

These Schottky-clamped high-performance multiplexers feature 3-STATE outputs that can interface directly with data lines of bus-organized systems. With all but one of the common outputs disabled (at a high impedance state), the low impedance of the single enabled output will drive the bus line to a HIGH or LOW logic level. To minimize the possibility that two outputs will attempt to take a common bus to opposite logic levels, the output enable circuitry is designed such that the output disable times are shorter than the output enable times.
Features
• 3-STATE versions LS157 and LS158 with same pinouts
• Schottky-clamped for significant improvement in A-C performance
• Provides bus interface from multiple sources in high-performance systems
• Average propagation delay from data input 12 ns
• Typical power dissipation: 50 mW
Alternatives

Functional Equivalent (FE) materials, including Fused Filament Fabrication (FFF) form, assembly, and functionally compatible substitute materials.

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