Overview
The CD74HC238MT, produced by Texas Instruments, is a high-speed CMOS logic 3-to-8 line decoder/demultiplexer. This device is well-suited for applications such as memory address decoding or data routing. It features three address select inputs (A2, A1, and A0) and three strobe inputs (G2, G1, and G0) to facilitate cascading and demultiplexing functions.
The CD74HC238MT operates with active high outputs, meaning the selected output is normally high when the corresponding address is selected. This makes it a versatile component for various digital logic circuits.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Package Type | SOIC-16 | Small Outline Integrated Circuit with 16 pins |
| Body Size | 9.90 mm × 3.90 mm | Physical dimensions of the package |
| Operating Voltage | 2V to 6V | Voltage range for proper operation |
| Current Consumption | Up to 5.2mA | Maximum current draw from the power supply |
| Address Inputs | A2, A1, A0 | Three address select inputs to choose the output |
| Strobe Inputs | G2, G1, G0 | Three strobe inputs for cascading and demultiplexing |
| Output Type | Active High | Selected output is normally high when the corresponding address is selected |
Key Features
- High-Speed Operation: The CD74HC238MT operates at high speeds, making it suitable for high-frequency digital logic applications.
- 3-to-8 Line Decoder/Demultiplexer: The device can function as both a decoder and a demultiplexer, allowing it to select one of eight data outputs based on the address inputs.
- Active High Outputs: The selected output is normally high when the corresponding address is selected, which is useful in various digital circuits.
- Cascading Capability: The three strobe inputs (G2, G1, G0) simplify cascading and facilitate demultiplexing functions.
- Low Power Consumption: The device operates with low current consumption, making it energy-efficient.
Applications
- Memory Address Decoding: The CD74HC238MT is well-suited for memory address decoding in digital systems.
- Data Routing: It can be used in data routing applications where data needs to be directed to one of multiple outputs based on address inputs.
- Digital Logic Circuits: The device is useful in various digital logic circuits that require decoding or demultiplexing functions.
- Embedded Systems: It can be integrated into embedded systems for controlling and managing data flow.
Q & A
- What is the primary function of the CD74HC238MT?
The primary function of the CD74HC238MT is to act as a 3-to-8 line decoder/demultiplexer, selecting one of eight data outputs based on the address inputs.
- What is the package type of the CD74HC238MT?
The CD74HC238MT comes in a SOIC-16 package.
- What is the operating voltage range for the CD74HC238MT?
The operating voltage range for the CD74HC238MT is 2V to 6V.
- How many address inputs does the CD74HC238MT have?
The CD74HC238MT has three address select inputs (A2, A1, A0).
- What is the purpose of the strobe inputs on the CD74HC238MT?
The strobe inputs (G2, G1, G0) are used to simplify cascading and facilitate demultiplexing functions.
- Are the outputs of the CD74HC238MT active high or active low?
The outputs of the CD74HC238MT are normally high when the corresponding address is selected, making them active high.
- What are some common applications of the CD74HC238MT?
Common applications include memory address decoding, data routing, digital logic circuits, and embedded systems.
- How much current does the CD74HC238MT consume?
The CD74HC238MT consumes up to 5.2mA of current.
- Is the CD74HC238MT suitable for high-frequency applications?
Yes, the CD74HC238MT is designed for high-speed operation, making it suitable for high-frequency digital logic applications.
- What is the physical size of the CD74HC238MT package?
The physical size of the SOIC-16 package is 9.90 mm × 3.90 mm.
