Schottky-Clamped High-Performance Multiplexers
3-STATE outputs for seamless interfacing with bus-organized systems
- Supply Voltage: 4.75 - 5.25V
- Input HIGH Voltage: 2.0V
- Input LOW Voltage: 0.8V
- HIGH Level Output Current: -2.6mA
- LOW Level Output Current: 24mA
- Free Air Operating Temperature: 70°C
- Package Includes: 1 X 74LS257 IC - (SMD Package) Quad 2-Input Multiplexer Tri-State IC (74257 IC)
Top Features:
- Schottky-clamped for improved A-C performance
- 3-STATE versions LS157 and LS158 with same pinouts
- Allows bus interface from multiple sources
- Propagation delay: 12 ns
These high-performance multiplexers with 3-STATE outputs enable seamless interfacing with data lines of bus-organized systems. The Schottky-clamped design ensures significant improvement in A-C performance, making them ideal for high-performance systems.
The output enable circuitry is optimized to prevent conflicts on the bus line, allowing for the implementation of n-bit data selectors with up to 258 sources. With an average propagation delay of 12 ns and low power dissipation of 50mW, these multiplexers are efficient and reliable for data retention in the system.
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