Overview
The SN74F138NSR is a 3-line to 8-line decoder/demultiplexer integrated circuit manufactured by Texas Instruments. This device is designed to decode three binary input lines to eight mutually exclusive output lines. It features two active-low and one active-high enable inputs, which can reduce the need for external gates or inverters in various applications. The SN74F138NSR operates over a temperature range of 0°C to 70°C, making it suitable for a wide range of electronic systems.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage Range (VCC) | –0.5 V to 7 V |
| Input Voltage Range (VI) | –1.2 V to 7 V |
| Input Current Range | –30 mA to 5 mA |
| Operating Free-Air Temperature Range | 0°C to 70°C |
| Storage Temperature Range | –65°C to 150°C |
| Output Current in Low State | 40 mA |
| Package Type | SO-16 (NSR) |
Key Features
- 3-line to 8-line decoder/demultiplexer functionality
- Two active-low and one active-high enable inputs
- Enable inputs can be used as data inputs for demultiplexing applications
- No external gates or inverters required for expanding to 24-line or 32-line decoders
- Low power consumption
Applications
- Decoding and demultiplexing in digital systems
- Data routing and selection in communication systems
- Control logic in industrial automation
- Memory address decoding in computer systems
- General-purpose logic circuits
Q & A
- What is the primary function of the SN74F138NSR?
The primary function is to decode three binary input lines to eight mutually exclusive output lines. - What are the operating temperature ranges for the SN74F138NSR?
The operating temperature range is from 0°C to 70°C. - What types of enable inputs does the SN74F138NSR have?
The device has two active-low and one active-high enable inputs. - Can the enable inputs be used as data inputs?
Yes, the enable inputs can be used as data inputs for demultiplexing applications. - What is the maximum output current in the low state?
The maximum output current in the low state is 40 mA. - What is the package type of the SN74F138NSR?
The package type is SO-16 (NSR). - What is the storage temperature range for the SN74F138NSR?
The storage temperature range is from –65°C to 150°C. - Can the SN74F138NSR be used in military temperature ranges?
No, the SN74F138NSR is not characterized for the full military temperature range; for that, the SN54F138 is used. - What are some common applications of the SN74F138NSR?
Common applications include decoding and demultiplexing in digital systems, data routing, control logic in industrial automation, and memory address decoding. - Where can I find more detailed specifications and datasheets for the SN74F138NSR?
You can find detailed specifications and datasheets on the Texas Instruments website or through distributors like Digi-Key and LCSC.
