The SN74ALS257AD is a versatile and high-performance quadruple 2-line to 1-line data selector/multiplexer designed by the renowned semiconductor company, Texas Instruments. This integrated circuit is part of the Advanced Low-Power Schottky (ALS) series, which is well-known for its excellent speed-to-power ratio, making it an ideal choice for a wide range of digital applications.
Key Features
- Four multiplexers with 2-line to 1-line functionality
- Standard 16-pin DIP (Dual In-line Package) or SOIC (Small Outline Integrated Circuit) package
- Low power consumption with ALS technology
- Typical switching time of 4.5 ns, enabling high-speed operations
- Wide operating voltage range of 4.5 V to 5.5 V
- Input and output directly interface with TTL (Transistor-Transistor Logic) levels
- 3-state outputs for connection to system buses
Applications
The SN74ALS257AD is suitable for various digital systems where efficient data routing is required. Its applications include:
- Data multiplexing
- Signal gating
- Input/output expansion
- Function generation
- Bus switching and isolation
Product Specifications
| Parameter |
Value |
| Supply Voltage (VCC) |
4.5V to 5.5V |
| High-Level Output Current (IOH) |
-0.4 mA |
| Low-Level Output Current (IOL) |
8 mA |
| Operating Temperature Range (Ta) |
0°C to 70°C |
| Package Type |
DIP, SOIC |
The SN74ALS257AD is a testament to Texas Instruments' commitment to providing high-quality and reliable components. Its combination of speed, power efficiency, and versatile functionality makes it a go-to choice for engineers and designers looking to optimize their digital systems.