74HC138 3-to-8 Line Decoder/Demultiplexer
Prices updated: 13 Oct 2026
Compare prices
| Store | product | Price | View in store |
|---|---|---|---|
 Most ElectronicsCheapest | 74HC138 – 74138 ( 3 to 8 Line Decoder ) | 12.9 EGP15.12 | View in store |
 Future Electronics | 74HC138 (3 to 8 Line Decoder ) | 15 EGP | View in store |
 Circuits Electronics | 74HC138 (3 to 8 Line Decoder- Demultiplexer) | 20 EGP | View in store |
Price history
Lowest daily price, last 90 days
Lowest price recorded: 12.9 EGP
About this product
The 74HC138 is a 3-to-8 line decoder that activates one of eight active-low outputs according to a 3-bit binary address. Three enable inputs, two active low and one active high, let it be cascaded into 4-to-16 or larger decoders. It is used for memory chip selection, peripheral addressing and selecting devices on a shared bus.
Specifications
- Type
- 3-to-8 line decoder/demultiplexer
- Address inputs
- A0, A1, A2
- Outputs
- 8, active low
- Enable inputs
- E1 and E2 (active low), E3 (active high)
- Supply voltage
- 2 V ~ 6 V
- Logic family
- 74HC (high-speed CMOS)
Frequently asked questions
What is the price of 74HC138 3-to-8 Line Decoder/Demultiplexer in Egypt?
74HC138 3-to-8 Line Decoder/Demultiplexer currently costs between 12.9 and 20 EGP across 3 offers in Egypt.
Where can I buy 74HC138 3-to-8 Line Decoder/Demultiplexer in Egypt?
74HC138 3-to-8 Line Decoder/Demultiplexer is available from Most Electronics, Future Electronics, and Circuits Electronics. Compare the offers above to find the best price.
How do I enable the decoder?
Hold E1 and E2 low and E3 high. When the device is disabled, all eight outputs stay high.
Can I build a 4-to-16 decoder with it?
Yes. The enable inputs allow two or more 74HC138 devices to be combined for 4-to-16 decoding, with the extra address line controlling the enables. The datasheet shows the wiring.
