Overview
The SN74HC257NG4, produced by Texas Instruments, is a Quadruple 2-Line to 1-Line Data Selectors/Multiplexers with 3-State Outputs. This integrated circuit is designed to select one of four data sources and direct the selected data to a common output. It is part of the HC (High-Speed CMOS) logic family, known for its high speed and low power consumption.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage Range | 2 V to 6 V | V |
| Operating Temperature Range | -40°C to +85°C | °C |
| Propagation Delay (Typical) | 15 ns to 39 ns | ns |
| Transition Time (Typical) | 6 ns to 16 ns | ns |
| Package Type | DIL (Dual In-Line Package), 16 pins | |
| Output Type | 3-State Outputs |
Key Features
- Wide Operating Voltage Range: The SN74HC257NG4 operates over a voltage range of 2 V to 6 V, making it versatile for various applications.
- High-Speed Operation: With propagation delays as low as 15 ns, this device is suitable for high-speed data selection and multiplexing.
- 3-State Outputs: Each output can be placed in a high-impedance state, allowing multiple devices to share the same output line.
- Low Power Consumption: Part of the HC logic family, this device is designed to minimize power consumption while maintaining high performance.
Applications
- Data Selection and Multiplexing: Ideal for selecting one of four data sources and directing the selected data to a common output in digital systems.
- Bus Systems: Useful in bus-oriented systems where multiple devices need to share the same data line.
- Communication Systems: Can be used in communication systems to select and multiplex data streams.
Q & A
- What is the operating voltage range of the SN74HC257NG4?
The operating voltage range is from 2 V to 6 V.
- What is the typical propagation delay of the SN74HC257NG4?
The typical propagation delay ranges from 15 ns to 39 ns depending on the operating voltage.
- What type of outputs does the SN74HC257NG4 have?
The device has 3-State outputs.
- What is the package type of the SN74HC257NG4?
The package type is DIL (Dual In-Line Package) with 16 pins.
- What are some common applications of the SN74HC257NG4?
Common applications include data selection and multiplexing, bus systems, and communication systems.
- How does the 3-State output feature work?
The 3-State output feature allows each output to be placed in a high-impedance state, enabling multiple devices to share the same output line.
- What is the operating temperature range of the SN74HC257NG4?
The operating temperature range is from -40°C to +85°C.
- Is the SN74HC257NG4 suitable for high-speed applications?
Yes, it is suitable for high-speed applications due to its low propagation delay.
- How does the device minimize power consumption?
The device is part of the HC logic family, which is designed to minimize power consumption while maintaining high performance.
- What are the key benefits of using the SN74HC257NG4 in bus systems?
The key benefits include the ability to share the same data line among multiple devices and efficient data selection and multiplexing.
