Complete Guide to Logic Gates
3-to-8 line decoder (SN74LS138)
The SN74LS138 is a 3-to-8 line decoder/demultiplexer. It takes 3 selection bits and activates one of 8 outputs. It has 3 enable inputs, ideal for addressing chips or expanding control lines. Popular in digital electronics for TTL compatibility and low cost.
Datasheet and Pin Diagram
The datasheet provides crucial technical information about this integrated circuit, including pin diagram, electrical characteristics and package information.
The SN74LS138 3-to-8 line decoder is a fundamental component in digital electronics. Its configuration is 3 selection inputs, 8 outputs. Its operation is based on the logic function .
Applications
- Memory addressing
- Data demultiplexing
- Chip selection
- Control line expansion
- Address decoding
This integrated circuit is used in various digital logic applications and embedded systems.
Truth Table
The truth table illustrates the output of the SN74LS138 3-to-8 line decoder for each possible combination of its logic inputs.
| G1 | G2A | G2B | C | B | A | Y0 | Y1-Y7 |
|---|---|---|---|---|---|---|---|
| H | L | L | L | L | L | L | H |
| H | L | L | L | L | H | L | H |
| H | L | L | L | H | L | L | H |
Technical Specifications
General Information
3-to-8 Decoder
3 selection inputs, 8 outputs
Electrical Characteristics
4.75V - 5.25V
20mA
15ns typ
0掳C to 70掳C
Package Information
DIP-14
0.1" (2.54mm)
Comentarios
No hay comentarios a煤n. 隆S茅 el primero en comentar!
Additional Information
To deepen your understanding of the SN74LS138 3-to-8 line decoder, you can consult additional resources on Boolean algebra and digital circuit design. Experimenting with circuit simulators or building physical circuits will help you consolidate your understanding.