SN74LS138 3-to-8 Line Decoder/Demultiplexer IC
Prices updated: 13 Oct 2026
Compare prices
| Store | product | Price | View in store |
|---|---|---|---|
 UGE | SN74LS138 | 11.5 EGP | View in store |
Price history
Lowest daily price, last 90 days
Lowest price recorded: 11.5 EGP
About this product
The SN74LS138 is a TTL (LS) decoder that activates one of eight active-low outputs based on three binary select inputs. It has two active-low enable inputs and one active-high enable input, which allow easy cascading into larger decoders without extra logic gates. It is widely used for memory chip selection, I/O port addressing and general address decoding.
Specifications
- Logic family
- LS (TTL)
- Decoding
- 3-to-8 line
- Select inputs
- 3 binary inputs (A, B, C)
- Enable inputs
- 2 active-low, 1 active-high
- Outputs
- 8, active-low
Frequently asked questions
What is the price of SN74LS138 3-to-8 Line Decoder/Demultiplexer IC in Egypt?
SN74LS138 3-to-8 Line Decoder/Demultiplexer IC currently costs 11.5 EGP in Egypt.
Where can I buy SN74LS138 3-to-8 Line Decoder/Demultiplexer IC in Egypt?
SN74LS138 3-to-8 Line Decoder/Demultiplexer IC is available from UGE. Compare the offers above to find the best price.
How do I expand it into a 4-to-16 decoder?
Use the enable inputs of one device as the fourth select line. Two SN74LS138 devices can be cascaded so that the enable pins route the active device, without extra gates.
What supply voltage does it require?
As an LS TTL device it is designed for a 5 V supply. Keep the supply close to 5 V and use decoupling capacitors near the power pins.
