The SN74AS257D is a high-performance integrated circuit from Texas Instruments designed for multiplexing and data selection in digital systems. This versatile device is a member of the Advanced Schottky (AS) logic family, which is renowned for its fast switching speeds and low power consumption, making it ideal for high-speed applications.
Key Features
- Quad 2-Line to 1-Line Data Selectors/Multiplexers: The SN74AS257D features four individual 2:1 multiplexers, allowing users to select between two sets of inputs and route them to a single output line.
- High-Speed Performance: With typical propagation delay times as low as 3.5 ns, this component ensures rapid data processing, which is crucial for time-sensitive applications.
- Low Power Consumption: The device operates efficiently with a typical power dissipation of just 20 mW, contributing to energy savings in electronic systems.
- 3-State Outputs: The outputs can be placed in a high-impedance state, which is useful for interfacing with bus-oriented systems and prevents bus contention issues.
- Wide Operating Temperature Range: The SN74AS257D functions reliably across a broad temperature range from 0°C to 70°C, ensuring stable performance in various environmental conditions.
Applications
The SN74AS257D is suitable for a wide array of applications, including:
- Data routing and signal gating
- Function generation
- Communication systems
- Process control systems
- Computer systems
Technical Specifications
| Parameter |
Value |
| Supply Voltage (VCC) |
4.5V to 5.5V |
| Input Voltage (VI) |
0V to 5.5V |
| Output Voltage (VO) |
0V to 5.5V |
| Operating Temperature |
0°C to 70°C |
| Package Type |
SOIC (Small Outline Integrated Circuit) |
With its combination of speed, efficiency, and versatility, the SN74AS257D from Texas Instruments stands out as an excellent choice for designers seeking a reliable multiplexer for their digital systems.