Overview
The CD74HC238M is a high-speed CMOS logic 3-to-8 line decoder/demultiplexer produced by Texas Instruments. This device is well-suited for memory address decoding or data routing applications. It contains a single 3:8 decoder with three address select inputs (A2, A1, and A0) and three strobe inputs (G2, G1, and G0) to facilitate cascading and demultiplexing functions. The outputs of the CD74HC238M are normally high when selected, making it an inverting decoder.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SOIC (D) |
| Number of Pins | 16 |
| Operating Temperature Range | -55°C to 125°C |
| Package Quantity | Carrier 2,500 (LARGE T&R) |
| RoHS Compliance | Yes |
| REACH Compliance | Yes |
| Lead Finish / Ball Material | SN / NIPDAU |
| MSL Rating / Peak Reflow | Level-1-260C-UNLIM |
Key Features
- Select one of eight data outputs with active high outputs for the '238 function.
- Three address select inputs (A2, A1, and A0) for decoder operation.
- Three strobe inputs (G2, G1, and G0) to simplify cascading and facilitate demultiplexing.
- High-speed CMOS logic for efficient operation.
- Low power consumption.
- Compatible with TTL inputs.
Applications
The CD74HC238M is suitable for various applications, including:
- Memory address decoding.
- Data routing in digital systems.
- Demultiplexing functions in communication systems.
- I/O port or memory selectors in microprocessor systems.
Q & A
- What is the primary function of the CD74HC238M?
The primary function is to act as a 3-to-8 line decoder/demultiplexer. - What are the package options available for the CD74HC238M?
The CD74HC238M is available in SOIC (D) package with 16 pins. - What is the operating temperature range of the CD74HC238M?
The operating temperature range is -55°C to 125°C. - How many address select inputs does the CD74HC238M have?
The device has three address select inputs (A2, A1, and A0). - What is the purpose of the strobe inputs on the CD74HC238M?
The strobe inputs (G2, G1, and G0) are used to simplify cascading and facilitate demultiplexing functions. - Are the outputs of the CD74HC238M active high or active low?
The outputs are normally high when selected. - Is the CD74HC238M RoHS and REACH compliant?
Yes, the device is both RoHS and REACH compliant. - What are some common applications of the CD74HC238M?
Common applications include memory address decoding, data routing, demultiplexing, and I/O port or memory selectors. - What is the MSL rating for the CD74HC238M?
The MSL rating is Level-1-260C-UNLIM. - Can the CD74HC238M be used with TTL inputs?
Yes, it is compatible with TTL inputs.
